I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down, it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll admit
that my knowledge is limited enough that it could be something else entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.

On Jun 12, 7:47 am, Yattaro wrote:
I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down, it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll admit
that my knowledge is limited enough that it could be something else entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3rhttp://tiny...url.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.

Looks like an inductor that was shrink-wrapped and damped against
vibration with a bit of either RTV silicon or elephant-snot.

Peter Wieck
Wyncote, PA

On Tue, 12 Jun 2007 11:47:53 GMT, Yattaro wrote:

I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down, it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll admit
that my knowledge is limited enough that it could be something else entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.


Repeat after me: "Inductor, not capacitor" and you will be OK!

"Yattaro" wrote in message
et...
I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to
start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down,
it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll admit
that my knowledge is limited enough that it could be something else
entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.

1. The "white goo" appears to be hot glue use to hold the component
(possibly during wave soldering step)

2. This circuit board has silk-screened legends, such as C102, L302, etc.
The first character used to identify this component will tell you what it
is:
"C" - capacitor, "L" - inductor

3. The component appears to have a polarity stripe, like electrolytic
capacitors.

4. IF this is an electrolytic capacitor -- I would replace it based upon it
physical condition -- but you would need the correct value and voltage
rating!
From your photos, really can not tell -- no value markings other than the
marking of: LO5G

"w9gb" wrote in message
. ..
"Yattaro" wrote in message
et...
I have an old Gateway EV700 monitor which shuts down after a few minutes
of
use. It sometimes sort of flashes the screen as if maybe it's trying to
start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down,
it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll
admit
that my knowledge is limited enough that it could be something else
entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.

1. The "white goo" appears to be hot glue use to hold the component
(possibly during wave soldering step)

2. This circuit board has silk-screened legends, such as C102, L302, etc.
The first character used to identify this component will tell you what it
is:
"C" - capacitor, "L" - inductor

3. The component appears to have a polarity stripe, like electrolytic
capacitors.

4. IF this is an electrolytic capacitor -- I would replace it based upon
it physical condition -- but you would need the correct value and voltage
rating!
From your photos, really can not tell -- no value markings other than the
marking of: LO5G



Its definitely an inductor - quite likely a linearity coil (polarising
stripe is an obvious clue) close examination may reveal that the ferrite
bobbin has an extra bit glued on the end opposite the leadout wires, this
will be magnetic which is easily confirmed by offering it the tip of a
screwdriver.

Mark the base of the bobbin as per the polarising stripe and peel off the
shrink wrap to inspect the winding for heat damage.

If the part is knackered it will be practically impossible to order a
replacement - go down the dump and claim a monitor of similar size & spec to
salvage the part from, but try it first - you may get lucky.

On Jun 12, 10:04 am, "ian field" wrote:
"w9gb" wrote in message

. ..





"Yattaro" wrote in message
. net...
I have an old Gateway EV700 monitor which shuts down after a few minutes
of
use. It sometimes sort of flashes the screen as if maybe it's trying to
start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down,
it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw what
looks like a capacitor which has been twisted and shrunken, but I'll
admit
that my knowledge is limited enough that it could be something else
entirely.

Here are some pictures. The white goo on the side is just glue, it didn't
come from inside the object. I didn't see any obvious signs of leakage or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve the
shutdown problem?

Thanks for any info anyone can provide.

1. The "white goo" appears to be hot glue use to hold the component
(possibly during wave soldering step)

2. This circuit board has silk-screened legends, such as C102, L302, etc.
The first character used to identify this component will tell you what it
is:
"C" - capacitor, "L" - inductor

3. The component appears to have a polarity stripe, like electrolytic
capacitors.

4. IF this is an electrolytic capacitor -- I would replace it based upon
it physical condition -- but you would need the correct value and voltage
rating!
From your photos, really can not tell -- no value markings other than the
marking of: LO5G

Its definitely an inductor - quite likely a linearity coil (polarising
stripe is an obvious clue) close examination may reveal that the ferrite
bobbin has an extra bit glued on the end opposite the leadout wires, this
will be magnetic which is easily confirmed by offering it the tip of a
screwdriver.

Mark the base of the bobbin as per the polarising stripe and peel off the
shrink wrap to inspect the winding for heat damage.

If the part is knackered it will be practically impossible to order a
replacement - go down the dump and claim a monitor of similar size & spec to
salvage the part from, but try it first - you may get lucky.- Hide quoted text -

- Show quoted text -

From the part number, it looks like a 0.05uH ferrite-core inductor.
(L05G).

This should be a start, if nothing else.

http://jql.manufacturer.globalsource...r-Inductor.htm

Peter Wieck
Wyncote, PA

wrote in message
oups.com...
On Jun 12, 10:04 am, "ian field" wrote:
"w9gb" wrote in message

. ..





"Yattaro" wrote in message
. net...
I have an old Gateway EV700 monitor which shuts down after a few
minutes
of
use. It sometimes sort of flashes the screen as if maybe it's trying
to
start
back up, but is never able to on its own. It will come back on for a
few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few
more
minutes, but then exhibits the above problems again. When it shuts
down,
it
has a sort of rainbow swirl pattern in the center of the screen.

I opened it up to see if there was anything obviously wrong, and saw
what
looks like a capacitor which has been twisted and shrunken, but I'll
admit
that my knowledge is limited enough that it could be something else
entirely.

Here are some pictures. The white goo on the side is just glue, it
didn't
come from inside the object. I didn't see any obvious signs of leakage
or
damage, but this thing certainly looks unnatural.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

Any idea what this is, if it's bad, and if replacing it might solve
the
shutdown problem?

Thanks for any info anyone can provide.

1. The "white goo" appears to be hot glue use to hold the component
(possibly during wave soldering step)

2. This circuit board has silk-screened legends, such as C102, L302,
etc.
The first character used to identify this component will tell you what
it
is:
"C" - capacitor, "L" - inductor

3. The component appears to have a polarity stripe, like electrolytic
capacitors.

4. IF this is an electrolytic capacitor -- I would replace it based
upon
it physical condition -- but you would need the correct value and
voltage
rating!
From your photos, really can not tell -- no value markings other than
the
marking of: LO5G

Its definitely an inductor - quite likely a linearity coil (polarising
stripe is an obvious clue) close examination may reveal that the ferrite
bobbin has an extra bit glued on the end opposite the leadout wires, this
will be magnetic which is easily confirmed by offering it the tip of a
screwdriver.

Mark the base of the bobbin as per the polarising stripe and peel off the
shrink wrap to inspect the winding for heat damage.

If the part is knackered it will be practically impossible to order a
replacement - go down the dump and claim a monitor of similar size & spec
to
salvage the part from, but try it first - you may get lucky.- Hide quoted
text -

- Show quoted text -

From the part number, it looks like a 0.05uH ferrite-core inductor.
(L05G).

This should be a start, if nothing else.

http://jql.manufacturer.globalsource...r-Inductor.htm

Peter Wieck
Wyncote, PA


For the value of a CRT display these days its hardly worth the effort of
what I suggested, let alone what's involved ordering a one-off part from
China!

w9gb wrote:

1. The "white goo" appears to be hot glue use to hold the component
(possibly during wave soldering step)

2. This circuit board has silk-screened legends, such as C102, L302, etc.
The first character used to identify this component will tell you what it
is:
"C" - capacitor, "L" - inductor

3. The component appears to have a polarity stripe, like electrolytic
capacitors.


The line appears to be an indicator of the position of the leads.


4. IF this is an electrolytic capacitor -- I would replace it based upon it
physical condition -- but you would need the correct value and voltage
rating!


When was the last time you saw an electrolytic made with a molded
ferrite core?


From your photos, really can not tell -- no value markings other than the
marking of: LO5G


Which indicates that its an inductor, not a capacitor.


--
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

"ian field" wrote in message
...
Its definitely an inductor - quite likely a linearity coil (polarising
stripe is an obvious clue) close examination may reveal that the
ferrite bobbin has an extra bit glued on the end opposite the leadout
wires, this will be magnetic which is easily confirmed by offering it
the tip of a screwdriver.

Could you elaborate on this type of inductors?
Polarized? what does the magnet do?


Thank you.

Best Regards

"Steve Sousa" wrote in message
anews.com...

"ian field" wrote in message
...
Its definitely an inductor - quite likely a linearity coil (polarising
stripe is an obvious clue) close examination may reveal that the ferrite
bobbin has an extra bit glued on the end opposite the leadout wires, this
will be magnetic which is easily confirmed by offering it the tip of a
screwdriver.

Could you elaborate on this type of inductors?
Polarized? what does the magnet do?

Makes it easier to saturate the core with current in one direction than the
other.

Steve Sousa wrote:

Could you elaborate on this type of inductors?
Polarized? what does the magnet do?


It prevents the core from saturating, due to the DC current flowing
through the winding(s).


--
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

On 12 jun, 04:47, Yattaro wrote:
I have an old Gateway EV700 monitor which shuts down after a few minutes of
use. It sometimes sort of flashes the screen as if maybe it's trying to start
back up, but is never able to on its own. It will come back on for a few
seconds if power cycled, but will then shut down again.

After it's been off for awhile it will come back on and last a few more
minutes, but then exhibits the above problems again. When it shuts down, it

you'll need to look at the pcb underside and check for cracked solder
joints. especially in the power supply and line stages where larger or
hotter components are. this sort of intermittent problem is often
caused by poor solder.

http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

I've never seen one of these. Open it up!!!

"Esther & Fester Bestertester" wrote in message
obal.net...
http://tinyurl.com/2ysl3r
http://tinyurl.com/ytxby8
http://tinyurl.com/2gbe8v

I've never seen one of these. Open it up!!!


They're very common in monitors and power supplies. Don't mess with it, it's
not your problem.