I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

uufd means micro-micro farad. Now it's called picofarad. You have a
..001 picofarad capacitor. (This is a very small value, are you sure
you have the decimal point right?) The colored dots were a type of
color code for capacitors, similar to the color rings on resistors.
They were often called domino capacitors; you can search for that
term.

You are probably right about the filter cap, it is common for them to
dry out and fail. It's pretty hard to find multi-section filter caps
any more (at least that aren't old an dried up). You can replace with
three separate caps with the minus sides (usually) tied together.
Failure of this cap would likely explain the loud hum. Do a google
search for multi-section capacitor to find sources and suggestions.

And you have an electromagnet speaker. Instead of a permanent magnet,
it used a second coil driven with DC to create the magnetic field for
the other coil to work against.

Good luck, you're going to need it! And there are still plenty of
enthusiasts around with tube testers; you're going to need that too!

HTH,

Paul F.

On Wed, 01 Aug 2007 02:51:13 -0500, wrote:


I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
....


try sci.electronics.repair and make sure you read the faq (do a google
search for "sci.electronics.repair faq")

Paul Franklin wrote:
On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. ...
uufd means micro-micro farad. Now it's called picofarad. You have a
.001 picofarad capacitor. (This is a very small value, are you sure
you have the decimal point right?) ...

If he does (have the point right, that is), that would equate to 1 nF
(nanofarad)...although I think standard nomenclature uses the uuF instead???

Not unheard of, but quite small, indeed.

--

"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


uuF = MicroMicro Farads = Pico Farads. Rec.antiques.radio+phono group can
help out a lot more - there are some TV restorers in there . Someone might
have some things you're looking for.

You're right - there's no chips in that TV. But you best learn more of the
parts in there - some might be knocking you on your ass - if you're not
careful.

"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


Just because "all the tubes light up" - doesn't mean anything. Any tube can
light up and still fail to perform properly. Your issue - description
"seems" to suggest a "Power Supply" issue ("maybe") - not feeding voltage to
RF/IF/Audio stages and not enough going to the leg to feed the "High
Voltage" section to supply the picture tube. Of course - with an old set -
most anything could be wrong and it could also be multiple issues. But the
best place to start - is the Power Supply from the AC in - checking voltages
to see where they cease to be normal. A schematic would really help tracing
voltages - hopefully you can read it. Taking voltages can be dangerous if
you're not familiar with doing so. Get someone near you who has experience -
if you have no experience, you/your family will be a lot safer for it.
Getting the RF/IF/Audio stages of the set working may not be so tough - just
hope the "picture tube" is still working to give you a picture! Good luck -
and BE CAREFUL.

You have a mica capacitor. THe dots are the color code for its value.
Unfortunately I have long forgotten how to read it.
http://www.tpub.com/neets/book2/3f.htm
http://www.tpub.com/neets/book2/3g.htm

The speaker is an electrodynamic speaker and derives its magnetic field from
an electromagnet. If I remember right the coil is usually part of the power
supply filter network (combined with that filter capacitor that is leaking).
THis was in the days before they had powerful fixed magnets
http://radioremembered.org/edspeaker.htm

As someone has already said, the electrolytic can be replaced with
individual aluminum electrolytics of the right value and voltage. You can go
high in voltage but not lower. You might try these sources:
http://www.allelectronics.com/index.html
http://safe.dhwd.com/cgi-bin/debco/index.html
http://www.mcmelectronics.com/
http://www.mouser.com/index.cfm?handler=home

wrote in message
...
I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

In article , "Radiosrfun" wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


uuF = MicroMicro Farads = Pico Farads. Rec.antiques.radio+phono group can
help out a lot more - there are some TV restorers in there . Someone might
have some things you're looking for.

You're right - there's no chips in that TV. But you best learn more of the
parts in there - some might be knocking you on your ass - if you're not
careful.

001 pF or uuF sounds like an impossible number. Stray capacitance will be
higher.

help
http://www.vcomp.co.uk/components/ca.../cap_codes.htm

I would guess its really a 1000 uuF pF

greg

probably .001 microfarads, some old printing used an extreme left drop serif
before the U of the UF.

or even a inverted M/m to signify the MicroFarad.

agreed, theres usually 250-600 volts at very substantial current scattered
around inside this older units, and the older the insulation gets on those
wires, the least it will protect u!

i applaud u for trying to fix this, you will be a "specialist" if you are
successful, as most of those old timers are rapidly dying off!

antiques? heck we all become antiques after awhile ;-))

at least this kool stuff remains, we either get buried semi-intact or
flashed into ashes!


"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?

Actually that's backwards...

A microfarad (uF) is 1/1000000 (millionth) of a farad.
A nanofarad (nF) is 1/1000 (thousandth) of a microfarad.
A picofarad (pF, formerly known as uuF) is 1/1000 of a nanofarad or 1/1000000 (millionth) of a microfarad.

So pico is the smallest common unit, micro is the largest, nano is in the middle.

As another poster said, .001 picofarads is incredibly small, I've never seen a commercial capacitor made with such a low
value. .001 uF is much more likely.

Incidentally, Google can do conversions like the above. Just enter "1 microfarad in nanofarads" and it'll give you the
answer!

Eric Law

"dpb" wrote in message ...
Paul Franklin wrote:
On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. ...
uufd means micro-micro farad. Now it's called picofarad. You have a
.001 picofarad capacitor. (This is a very small value, are you sure
you have the decimal point right?) ...

If he does (have the point right, that is), that would equate to 1 nF
(nanofarad)...although I think standard nomenclature uses the uuF instead???

Not unheard of, but quite small, indeed.

--

Doesn't it go: Micro, Nano, Pico?
so Micro = X10 to the -6
nan0 = X10 to the -9
and pico = X10 to the -12
so micro micro is X10 to the -12 or pico? and there fore .001 micro micro =
,001 pico which is not a valid commercially available value


"GregS" wrote in message
...
In article , "Radiosrfun"
wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


uuF = MicroMicro Farads = Pico Farads. Rec.antiques.radio+phono group can
help out a lot more - there are some TV restorers in there . Someone might
have some things you're looking for.

You're right - there's no chips in that TV. But you best learn more of the
parts in there - some might be knocking you on your ass - if you're not
careful.

001 pF or uuF sounds like an impossible number. Stray capacitance will be
higher.

help
http://www.vcomp.co.uk/components/ca.../cap_codes.htm

I would guess its really a 1000 uuF pF

greg

Meat Plow wrote:

fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

Almost certainly microfarad. it would be 1 nF.

The use of 'MFD' was only ever a US phenomenon.

Graham

Radiosrfun wrote:

uuF = MicroMicro Farads = Pico Farads.

However 0.001 picofarads makes NO sense at all.

Graham

Eeyore wrote:

Meat Plow wrote:

fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

Almost certainly microfarad. it would be 1 nF.

The use of 'MFD' was only ever a US phenomenon.

Graham


Sure it was.



--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Eric wrote:
Actually that's backwards...
....

Yeah, DOH! Had a moment there, for sure...writing/thinking weren't
connected to each other...

--

"Eeyore" wrote in message
...


Radiosrfun wrote:

uuF = MicroMicro Farads = Pico Farads.

However 0.001 picofarads makes NO sense at all.

Graham


I was answering the "basic" question of uuF - and that was "before" i had my
coffee. I wasn't paying attention to the actual "value". Due to the back
ground of the poster - it "appears" he had limited electronics experience to
start with. I'm more concerned with his sticking his fingers in a place -
unexperienced, than a "Value" of a component.

In article , "Radiosrfun" wrote:
"Eeyore" wrote in message
...


Radiosrfun wrote:

uuF = MicroMicro Farads = Pico Farads.

However 0.001 picofarads makes NO sense at all.

Graham


I was answering the "basic" question of uuF - and that was "before" i had my
coffee. I wasn't paying attention to the actual "value". Due to the back
ground of the poster - it "appears" he had limited electronics experience to
start with. I'm more concerned with his sticking his fingers in a place -
unexperienced, than a "Value" of a component.

Some of my first experiances with electricity.

My mother told me of the time I was spilling water in to the socket of a table
lamp I had unscrewed the light bulb.

The second time was with a remote control bus I had which worked
with a spark gap static transmitter. I had unscrewed the antenna and
poked my finger inside while pressing the transmit button. I remembered
this ocasion very well.

Watch out where you stick your fingers.

greg

On Wed, 01 Aug 2007 15:34:58 GMT, (GregS) wrote:

In article , "Radiosrfun" wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


Go to http://www.goodolejoe.net and download "TV Diagnostics II". It
also contains color code charts.
Cheers,
Joe

"GregS" wrote in message
...
In article , "Radiosrfun"
wrote:
"Eeyore" wrote in message
...


Radiosrfun wrote:

uuF = MicroMicro Farads = Pico Farads.

However 0.001 picofarads makes NO sense at all.

Graham


I was answering the "basic" question of uuF - and that was "before" i had
my
coffee. I wasn't paying attention to the actual "value". Due to the back
ground of the poster - it "appears" he had limited electronics experience
to
start with. I'm more concerned with his sticking his fingers in a place -
unexperienced, than a "Value" of a component.

Some of my first experiances with electricity.

My mother told me of the time I was spilling water in to the socket of a
table
lamp I had unscrewed the light bulb.

The second time was with a remote control bus I had which worked
with a spark gap static transmitter. I had unscrewed the antenna and
poked my finger inside while pressing the transmit button. I remembered
this ocasion very well.

Watch out where you stick your fingers.

greg

Ah yes, our formal learning years........ I used to stick my fingers in Lamp
sockets and turn them on - what a tingle! OR grab onto Antennas with a
transmitter turned on. No wonder I've got such an electrifying personality!
I produce sparks most of the time when touching metal or so on.
Hmmmmmmmmmmmm How I miss those years! I'll have to try to relive some of
those experiences for old time sake.

L.

On Wed, 01 Aug 2007 08:54:35 -0500, dpb wrote:

Paul Franklin wrote:
On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. ...
uufd means micro-micro farad. Now it's called picofarad. You have a
.001 picofarad capacitor. (This is a very small value, are you sure
you have the decimal point right?) ...

If he does (have the point right, that is), that would equate to 1 nF
(nanofarad)...although I think standard nomenclature uses the uuF instead???

Not unheard of, but quite small, indeed.

Metric prefixes=

eta- 10^18=1,000,000,000,000,000,000
peta- 10^15=1,000,000,000,000,000
tera- 10^12=1,000,000,000,000
giga - 10^9=1,000,000,000
mega 10^6=1,000,000
kilo- 10^3=1,000
10^0=1
mili- 10^-3=.001
micro- 10^-6=.000,001
nano- 10^-9=.000,000,001
pico- .10^-12=.000,000,000,001
femto- 10^-15=.000,000,000,000,001
atto- 10^-18=.000,000,000,000,000,001

1 nanofarad = 1000 picofarad = .001 microfarad
..001 picofarad = 1 femtofarad.
--
Mark Lloyd
http://notstupid.laughingsquid.com

"Unlike biological evolution. 'intelligent design' is
not a genuine scientific theory and, therefore, has
no place in the curriculum of our nation's public
school classes." -- Ted Kennedy

On Wed, 01 Aug 2007 16:10:53 GMT, "jmagerl"
wrote:

Doesn't it go: Micro, Nano, Pico?
so Micro = X10 to the -6
nan0 = X10 to the -9
and pico = X10 to the -12
so micro micro is X10 to the -12 or pico? and there fore .001 micro micro =
,001 pico which is not a valid commercially available value

Sounds like you've got those units right. For some reason they don't
seem to use milli- (10^-3) or nano- with capacitors.

I don't know much about old electronic stuff, but in the more recent
stuff there are a lot of .001 uF (not uuF or pF) capacitors.
--
Mark Lloyd
http://notstupid.laughingsquid.com

"Unlike biological evolution. 'intelligent design' is
not a genuine scientific theory and, therefore, has
no place in the curriculum of our nation's public
school classes." -- Ted Kennedy

Antique B+W TV sets were power hogs. I can't picture a picofarad cap
having an existence in the circuitry. Plus if the cap is physically
big enough to have color dots printed on it for cap value purposes its
likely a lot higher than the picofarad value.


On Wed, 1 Aug 2007 11:57:56 -0400, "Eric" wrote:

Actually that's backwards...

A microfarad (uF) is 1/1000000 (millionth) of a farad.
A nanofarad (nF) is 1/1000 (thousandth) of a microfarad.
A picofarad (pF, formerly known as uuF) is 1/1000 of a nanofarad or 1/1000000 (millionth) of a microfarad.

So pico is the smallest common unit, micro is the largest, nano is in the middle.

As another poster said, .001 picofarads is incredibly small, I've never seen a commercial capacitor made with such a low
value. .001 uF is much more likely.

Incidentally, Google can do conversions like the above. Just enter "1 microfarad in nanofarads" and it'll give you the
answer!

Eric Law

"dpb" wrote in message ...
Paul Franklin wrote:
On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. ...
uufd means micro-micro farad. Now it's called picofarad. You have a
.001 picofarad capacitor. (This is a very small value, are you sure
you have the decimal point right?) ...

If he does (have the point right, that is), that would equate to 1 nF
(nanofarad)...although I think standard nomenclature uses the uuF instead???

Not unheard of, but quite small, indeed.

--

"Radiosrfun" wrote in message
...
"GregS" wrote in message
...
In article , "Radiosrfun"
wrote:
"Eeyore" wrote in message
...


Radiosrfun wrote:

uuF = MicroMicro Farads = Pico Farads.

However 0.001 picofarads makes NO sense at all.

Graham


I was answering the "basic" question of uuF - and that was "before" i had
my
coffee. I wasn't paying attention to the actual "value". Due to the back
ground of the poster - it "appears" he had limited electronics experience
to
start with. I'm more concerned with his sticking his fingers in a place -
unexperienced, than a "Value" of a component.

Some of my first experiances with electricity.

My mother told me of the time I was spilling water in to the socket of a
table
lamp I had unscrewed the light bulb.

The second time was with a remote control bus I had which worked
with a spark gap static transmitter. I had unscrewed the antenna and
poked my finger inside while pressing the transmit button. I remembered
this ocasion very well.

Watch out where you stick your fingers.

greg

Ah yes, our formal learning years........ I used to stick my fingers in
Lamp sockets and turn them on - what a tingle! OR grab onto Antennas with
a transmitter turned on. No wonder I've got such an electrifying
personality! I produce sparks most of the time when touching metal or so
on. Hmmmmmmmmmmmm How I miss those years! I'll have to try to relive some
of those experiences for old time sake.

L.


Isn't it amazing - how much we all "sort of" resemble or try to emulate -
Uncle Fester - Addamms Family! I recall a toy store next to my house as a
child used to sell a "light bulb" you could stick in your mouth to make it
light up - like Uncle Fester.
Those were the good ole days - "before" learning "safety".

I recall a time, I had an tube type H.F. rig needing repaired. The damned
volt probe kept slipping off the post with clip installed. I knew to keep
one hand out or else. Well, I said to myself mentally (the angel on my
shoulder speaking) - dummy - you're going to get lit up if you stick both
your hands in there to hold those probes in place. BUT - (the devil on my
other shoulder prodding me on) I didn't heed my own advice and I did just
that - stuck both hands in. YEP - sure as hell - I got lit up. Served me
right. Man, that tickled worse than the "Light socket". Didn't have to kick
myself in the ass - the shock did a good enough job.

I still get a tingle now and then, but not like I used to. I take less
chances. Too old to do that stuff now. Don't know how many more ticks the
ole hearts clock has left in it, don't want to short circuit them.

wrote in message
...
I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

While argument goes on, on pico micro and so on.
This three capacitor above you can make up of three different ones
all you need to remembered that all three have same common -leg
as you have them listed, one combine unit I don't believe you will find
if you do find one $40.00 bucks is not outrageous.

Small cap is must likely ceramic device color code will be voltage rating
and % value I think to know for sure you need to know MFG.
it can be substituted with silver mica 300VDC or higher.




I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

On 8/1/07 8:34 AM, in article , "GregS"
wrote:

In article , "Radiosrfun"
wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


uuF = MicroMicro Farads = Pico Farads. Rec.antiques.radio+phono group can
help out a lot more - there are some TV restorers in there . Someone might
have some things you're looking for.

You're right - there's no chips in that TV. But you best learn more of the
parts in there - some might be knocking you on your ass - if you're not
careful.

001 pF or uuF sounds like an impossible number. Stray capacitance will be
higher.

help
http://www.vcomp.co.uk/components/ca.../cap_codes.htm

I would guess its really a 1000 uuF pF

greg

It's .001 mFd, or uFd if you prefer. A value commonly found in older
radios.

"GregS" wrote in message
...
In article , "Radiosrfun"
wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Try asking in the right news group. There is an antique repair group for
radios but I know none for televison. Maybe someone in
sci.electronics.repair knows?


uuF = MicroMicro Farads = Pico Farads. Rec.antiques.radio+phono group can
help out a lot more - there are some TV restorers in there . Someone might
have some things you're looking for.

You're right - there's no chips in that TV. But you best learn more of the
parts in there - some might be knocking you on your ass - if you're not
careful.

001 pF or uuF sounds like an impossible number. Stray capacitance will be
higher.

help
http://www.vcomp.co.uk/components/ca.../cap_codes.htm

I would guess its really a 1000 uuF pF

greg

Look here

http://www.dc-daylight.ltd.uk/Valve-...our-Codes.html

Arfa

On Wed, 01 Aug 2007 02:51:13 -0500, wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side

The u's are either mu's or they are u's used to represent mu's, the
Greek letter that micro begins with.

it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

But there's no reason to think it is bad, right? You're just asking
about the value.

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

Go to www.arrl.com and look for hamfests in your area. They're on
Sunday mornings, and once in while Sat. and Sunday. Lots of used
stuff and guys to talk to, including some with tube testers.

Or look for ham radio clubs on the same webpage.

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

If you can't get 80's, you can use two 40's or four 20's, etc. You
can go higher on the mfd's, but no lower on the voltage.

I needed soemthing like yours for my 1930 Hallicrafters radio. The
original cap lasted 60 years, which I think is pretty good. But I
couldn't find what I needed in 1 or even 2 pieces.

I get nothing on the screen, but there is a loud hum coming from the

Even when they don't leak, if there is a loud hum coming from the
speaker, it's probably the power supply filter capacitor. It's after
the diodes (tube or transistor) and before the rest of the radio/tv.

It takes the 60 cycle hum out of the power supply. Since the AC has
been rectified, the hum is 120 cycles per second. If someone can tell
one tone from another, you can tell for sure (although I'm sure
without getting out of my chair.)



speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

On Wed, 1 Aug 2007 16:41:05 -0400 "Radiosrfun"
wrote in Message id: :


I recall a time, I had an tube type H.F. rig needing repaired. The damned
volt probe kept slipping off the post with clip installed. I knew to keep
one hand out or else. Well, I said to myself mentally (the angel on my
shoulder speaking) - dummy - you're going to get lit up if you stick both
your hands in there to hold those probes in place. BUT - (the devil on my
other shoulder prodding me on) I didn't heed my own advice and I did just
that - stuck both hands in. YEP - sure as hell - I got lit up. Served me
right. Man, that tickled worse than the "Light socket". Didn't have to kick
myself in the ass - the shock did a good enough job.

I can remember making a Jacob's ladder with a oil burner transformer, and
sticking all manner of objects into the resulting arc to see what would
happen - paper would get holes punched through it and sometimes catch
fire, etc. One day I held a pencil by the eraser end (metal) into the arc.
Of course, the high voltage traveled up the inside of the pencil and
discharged to the metal end I was holding (duh!) Naturally, I didn't
attempt THAT one again...

On Thu, 02 Aug 2007 06:51:42 -0400, JW wrote:

On Wed, 1 Aug 2007 16:41:05 -0400 "Radiosrfun"
wrote in Message id: :


I recall a time, I had an tube type H.F. rig needing repaired. The damned
volt probe kept slipping off the post with clip installed. I knew to keep
one hand out or else. Well, I said to myself mentally (the angel on my
shoulder speaking) - dummy - you're going to get lit up if you stick both
your hands in there to hold those probes in place. BUT - (the devil on my
other shoulder prodding me on) I didn't heed my own advice and I did just
that - stuck both hands in. YEP - sure as hell - I got lit up. Served me
right. Man, that tickled worse than the "Light socket". Didn't have to kick
myself in the ass - the shock did a good enough job.

I can remember making a Jacob's ladder with a oil burner transformer, and
sticking all manner of objects into the resulting arc to see what would
happen - paper would get holes punched through it and sometimes catch
fire, etc. One day I held a pencil by the eraser end (metal) into the arc.
Of course, the high voltage traveled up the inside of the pencil and
discharged to the metal end I was holding (duh!) Naturally, I didn't
attempt THAT one again...


You ain't seen a Jacobs Ladder till you see this one that shoots 100
feet in the air from a 500KV.
Go to: http://205.243.100.155/frames/longarc.htm
Then watch the video called "This is the record holder for the world's
largest unintentional Jacob's Ladder!".

Of course look at the others too.
I love this website !!!!

By the way, I used to play with neon light transformers. They can
really kick butt !!!!

"JW" wrote in message
...
On Wed, 1 Aug 2007 16:41:05 -0400 "Radiosrfun"
wrote in Message id: :


I recall a time, I had an tube type H.F. rig needing repaired. The
damned
volt probe kept slipping off the post with clip installed. I knew to keep
one hand out or else. Well, I said to myself mentally (the angel on my
shoulder speaking) - dummy - you're going to get lit up if you stick both
your hands in there to hold those probes in place. BUT - (the devil on my
other shoulder prodding me on) I didn't heed my own advice and I did just
that - stuck both hands in. YEP - sure as hell - I got lit up. Served me
right. Man, that tickled worse than the "Light socket". Didn't have to
kick
myself in the ass - the shock did a good enough job.

I can remember making a Jacob's ladder with a oil burner transformer, and
sticking all manner of objects into the resulting arc to see what would
happen - paper would get holes punched through it and sometimes catch
fire, etc. One day I held a pencil by the eraser end (metal) into the arc.
Of course, the high voltage traveled up the inside of the pencil and
discharged to the metal end I was holding (duh!) Naturally, I didn't
attempt THAT one again...

ROFLMAO - that was funny. Not then, but boy how we can laugh at ourselves
now - eh?

L.

On Thu, 2 Aug 2007 09:06:14 -0400 "Radiosrfun"
wrote in Message id: :

"JW" wrote in message
.. .
On Wed, 1 Aug 2007 16:41:05 -0400 "Radiosrfun"
wrote in Message id: :


I recall a time, I had an tube type H.F. rig needing repaired. The
damned
volt probe kept slipping off the post with clip installed. I knew to keep
one hand out or else. Well, I said to myself mentally (the angel on my
shoulder speaking) - dummy - you're going to get lit up if you stick both
your hands in there to hold those probes in place. BUT - (the devil on my
other shoulder prodding me on) I didn't heed my own advice and I did just
that - stuck both hands in. YEP - sure as hell - I got lit up. Served me
right. Man, that tickled worse than the "Light socket". Didn't have to
kick
myself in the ass - the shock did a good enough job.

I can remember making a Jacob's ladder with a oil burner transformer, and
sticking all manner of objects into the resulting arc to see what would
happen - paper would get holes punched through it and sometimes catch
fire, etc. One day I held a pencil by the eraser end (metal) into the arc.
Of course, the high voltage traveled up the inside of the pencil and
discharged to the metal end I was holding (duh!) Naturally, I didn't
attempt THAT one again...

ROFLMAO - that was funny. Not then, but boy how we can laugh at ourselves
now - eh?

Yup, the ones of us who lived!

On 1 Aug, 15:37, "Radiosrfun" wrote:
"Meat Plow" wrote in message
...
On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:

I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I

mica capacitor, most probably silver mica. These are highly stable
small value caps. (The much earlier non-silvered ones were not so
stable.)


know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

These antique electronics sure have some weird parts, even though they
are built like army tanks.
I wish I had a tube tester....... They all light up !

You shouldnt need a tube tester, although theyre a nice luxury. A good
place to start when you dont know where to begin is to measure the
anode voltages on all the valves. A tv is a series of stages, each
containing 1 or sometimes more valve sections, and in each case faults
in the psu, anode or grid circuits will generally show up in abnormal
anode readings. General tube data will show you whether a tube can run
at the v found, and that v should be lower than the psu line suppying
it, IOW the tube should be conducting, not off or saturated.

Loud 50/100Hz from the LS can sometimes result from a short or a valve
turned hard on, either of which can fry things fairly quickly, so dont
leave it on like that for a minute or more until you know whats
happening.


Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking.

I wouldnt assume that. Even if it is, very minor leakage is not a
reason to replace it. Corrosion on historic parts is part of the deal,
and not usually cause for replacement. Give it a clean with a cotton
bud is a good idea.

Beware when handling old caps, some used PCBs (poly chlorinated
biphenyls iirc) which is toxic stuff, and some can leak mechanically.
You dont want any of that on your skin.


It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

1. You cant.
2. You've not given any reason that it would need replacing
3. Replacing parts of antique equipment without a valid reason is not
a smart idea.
4. Those are high voltage ratings, especially considering that it was
common practice to run supply lytics at (and sometimes above) their V
ratings. IOW this thing is likely to be running some fairly evil
voltages round the set. Handle with much care.


I get nothing on the screen,

if you can get the service info for the tv model or crt type you can
meter the crt pins, then you should have some idea what's causing the
raster blackout. Extremely low emission causing a blank (black) screen
is always a possibility on these old sets, which contrary to popular
belief is very much fixable.

BTW there were a few pink screen sets around, easier on the eyes than
white.


but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis.

Yeah, thats a very old design. How historic is this set? Wound field
speakers were used mostly in the 1930s (1930s TVs are rare prized
collectors items). They were used to give greater mag field strength
than the PM designs of the day. This allowed large gaps to be used,
higher power to be handled and ensured they handled bass and volume
without fouling. Usually the field wind would be used as the smoothing
inductor in the psu section. But this is a typical 1930s circuit
design feature.


Of course - with an old set -
most anything could be wrong and it could also be multiple issues.

IME this is very likely.

A word of warning about historic TVs: the tube faces are thin walled
and rim-band-less. This makes them fragile and somewhat bomb-like. DO
NOT **** about with the tube or apply forces to it, treat it with
care, and be very careful if ever the protective glass screen has to
be removed.

Also, just in case this is a very early set, beware of the EHT. 1930s
sets normally used a mains transformer for EHT, which could deliver
serious shocks and start fires.

There is an assortment of safety issues with old tvs, really you
should be upto speed on them before working on it.


To use it, you may run into 2 issues:

1. Transmission frequencies have changed in many countries, so you may
need to use an external tuner (eg a video recorder) and feed baseband
into the set. This isnt hard but its not elementary either.

2. Line speed has also changed in most countries, and this is a bigger
issue, though not insurmountable.


NT

On Wed, 01 Aug 2007 02:51:13 -0500, fartblanket wrote:
I'm trying to fix this antique black and white tv.
There's a part in the tv that says .001 uufd on it. On the other side
it looks like a domino with 6 colored dots. The dots are different
colors, the thing is rectangular with a wire on each end. It is about
1 inch long a half inch wide and 1/8 inch thick. Flat package. I
know it's not a chip or power transistor becaue this is a tube tv set.
It dont look like a resistor. Capacitors are usually labelled MFD
(microfarad). What the heck is uufd?

Marking standards were all over the map in the early days. MFD would
have been MicroFarads, but by todays standards a capital "M" would
indicate MegaFarads, which is an unlikely size...

MMF or MMFD usually indicated MicroMicroFarads, which today we call
PicoFarads. I do not recall having seen uufd, but by description it
is almost certainly .001 MicroFarads (1000 PicoFarads), probably
silver mica and they don't usually go bad unless badly abused.

The "dominoes" were an early molded packaging scheme that isn't used
anymore. Usually red or brown and the dots color code for value.

Another thing. I notice corrosion around one of the filter caps. I
bet it's leaking. It's a metal can about 4 inches tall, 1.5 inches in
diameter, and it has 3 leads on the bottom. (3 caps in one can)
It reads:
80mfd 600v
10mfd 450v
40mfd 450v
Where can I get a replacement?

Many of these multi-section electrolytics were made to order, and almost
no one does things this way anymore. Try Antique Electronics Supply for
some similar generic parts. There used to be a couple companies that
would repack the original cans for a hefty fee. If you just want to get
it to play, you can figure a way to mount three individual caps of
similar value.

I get nothing on the screen, but there is a loud hum coming from the
speaker, which happens to be a the weirdest speaker I ever saw. It's
got a coil where there would normally be a magnet and an extra set of
wires going to the chassis. No parts look burned.

Some early makers used an electromagnet (the extra coil), which may
also do double duty as a supply filter inductor, and when the filter
caps get bad they hum quite a bit. Almost everyone eventually settled
on the permanent magnet setup to simplify wiring, replacement, etc.