Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably won't
be worth doing. However, the image geometry of the current flat direct view
sets is unacceptable to me.

Thanks,

Dave M.

"Dave M." wrote in message
...
Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably
won't
be worth doing. However, the image geometry of the current flat direct
view
sets is unacceptable to me.

Thanks,

Dave M.

Hmmm, with the pitiful commercial tv fare offered today, it's a wonder you
noticed image geometry distortion.

/regards,
Tom

I have no idea about the net, but you will have to find a scrapper set with
a good tube in it. This will be a very rare find! The tube for your set is
not available from Sony any more.

There are some CRT rebuilders around that may be able to rebuild the old
one. If they can have the electron-gun, they will replace it. The cost is
not cheap. With a rebuilt tube, you are stuck with the old phosphors. If
the phosphors have some burns or wear, you would be stuck with that. But, if
they are acceptable you will have a renewed tube. The rebuilts generally
last about 2 to 3 years.

I myself would prefer a new Wega over the old EXR series. The cost for the
rebuilt tube, including the transport will come close to the same as a new
set, and that is if you do your own installation work. As for the service
manual, there is a chance that it is still available from Sony. I think it
used to cost about $40 to $60 US from Sony, plus the mailing charge, if I
remember correctly.

Remember that when replacing a tube on a very old set with a lot of years on
it, there are many other components that can easily fail soon after. If non
available components fail, you will be out a lot of bucks, having a set with
a newly rebuilt tube, and not repairable. I have seen this from time to time
with persistent customers, when I was in this business.

If you call a Sony service centre in your area, they can tell you where they
are going to have their CRT's rebuilt, if they are doing this type of
service for their customers. Also, they may want to sell you the rebuilt
tube, rather than you going directly.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Dave M." wrote in message
...
Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably won't
be worth doing. However, the image geometry of the current flat direct view
sets is unacceptable to me.

Thanks,

Dave M.

Then you need to check into the new Panasonic flat screen sets they have
a better picture than the new sonys .

"Ken G." wrote in message
...
Then you need to check into the new Panasonic flat screen sets they have
a better picture than the new sonys .

What "flat screens" exactly are you referring to? Flat CRTs, PDPs? "Better
picture" is also a very vague statement.

In the case of PDPs the Panasonics have always been a better choice than the
Sonys. The most recent Sonys are actually closer to the Panasonics in
performance than previous models, though the Pansonic is easily a better
display.

In the case of flat CRTs, the differences between the Panasonic and Sony are
typical of those of the past many years. Geometry, purity, and convergence
are similar. Ability to resolve detail is slightly better on good signals
on the Sony. The Panasonics have a softer look that is more forgiving of
lousy signals. The Sony sets seem to over enhance any noise, while the
Panasonics have less of a tendency to do so. Likely due to flatter video
response in the Panasonic and a slightly softer look in the CRT. In terms
of design, personally, I like the newest Sony sets as they seem to be
somewhat more robust, but time will tell in this matter.

Leonard Caillouet

"Leonard Caillouet" wrote in message
news:MgZIb.31853$F22.24081@lakeread02...
"Ken G." wrote in message
...
Then you need to check into the new Panasonic flat screen sets they have
a better picture than the new sonys .

What "flat screens" exactly are you referring to? Flat CRTs, PDPs?
"Better
picture" is also a very vague statement.

In the case of PDPs the Panasonics have always been a better choice than
the
Sonys. The most recent Sonys are actually closer to the Panasonics in
performance than previous models, though the Pansonic is easily a better
display.

In the case of flat CRTs, the differences between the Panasonic and Sony
are
typical of those of the past many years. Geometry, purity, and
convergence
are similar. Ability to resolve detail is slightly better on good signals
on the Sony. The Panasonics have a softer look that is more forgiving of
lousy signals. The Sony sets seem to over enhance any noise, while the
Panasonics have less of a tendency to do so. Likely due to flatter video
response in the Panasonic and a slightly softer look in the CRT.

I've always attributed these softness problems to the three beam system.
However, three beam tubes such as Toshibas can be much brighter. Panasonics
look dim to me.


In terms
of design, personally, I like the newest Sony sets as they seem to be
somewhat more robust, but time will tell in this matter.

Leonard Caillouet

On Thu, 01 Jan 2004 22:34:59 GMT, "Dave M."
wrote:

I've always attributed these softness problems to the three beam system.
However, three beam tubes such as Toshibas can be much brighter. Panasonics
look dim to me.

Three beam system? Even sony wega still has three guns. Softness or
hardness of details comes from both circuit (filtering & shaping
waveforms) and quality of flyback transformer to supply stable & clean
focus supply.

I know because RCA CRT were used in so many brands, Daewoo has same
CRT (exact same part number) as in other JVC and RCA 27" sets and both
JVC and RCA has good sharpness while Daewoo has nasty too soft look,
ditto to Philips's even on their newest flat CRT, looks nasty and
cheap where flat crt is expected to give stunning pix and quality but
wasn't.

Cheers,

Wizard



In terms
of design, personally, I like the newest Sony sets as they seem to be
somewhat more robust, but time will tell in this matter.

Leonard Caillouet

"Ken G." wrote in message
...
Then you need to check into the new Panasonic flat screen sets they have
a better picture than the new sonys .

I've always been a fan of Panasonic and not just TV's. The problem with all
three gun sets is the image texture the aperture or shadow mask creates
(Sony's don't do that). Things look smoother. Also, The single beam seams
not to diffuse as much as triple beams in the highlights.

I agree, It's a big investment, but the quality control of this set is very
tight as far as convergence geometry, etc.. , but, I had to replace the STK
series triple regulator twice in this set. Sony must have had a problem with
this chip. The third chip was replaced with an ECG series device. It's been
four years with no problem.

I'm worried, because a new set might not satisfy me.


"Jerry G." wrote in message
...
I have no idea about the net, but you will have to find a scrapper set
with
a good tube in it. This will be a very rare find! The tube for your set
is
not available from Sony any more.

There are some CRT rebuilders around that may be able to rebuild the old
one. If they can have the electron-gun, they will replace it. The cost is
not cheap. With a rebuilt tube, you are stuck with the old phosphors. If
the phosphors have some burns or wear, you would be stuck with that. But,
if
they are acceptable you will have a renewed tube. The rebuilts generally
last about 2 to 3 years.

I myself would prefer a new Wega over the old EXR series. The cost for the
rebuilt tube, including the transport will come close to the same as a new
set, and that is if you do your own installation work. As for the service
manual, there is a chance that it is still available from Sony. I think
it
used to cost about $40 to $60 US from Sony, plus the mailing charge, if I
remember correctly.

Remember that when replacing a tube on a very old set with a lot of years
on
it, there are many other components that can easily fail soon after. If
non
available components fail, you will be out a lot of bucks, having a set
with
a newly rebuilt tube, and not repairable. I have seen this from time to
time
with persistent customers, when I was in this business.

If you call a Sony service centre in your area, they can tell you where
they
are going to have their CRT's rebuilt, if they are doing this type of
service for their customers. Also, they may want to sell you the rebuilt
tube, rather than you going directly.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Dave M." wrote in message
...
Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably
won't
be worth doing. However, the image geometry of the current flat direct
view
sets is unacceptable to me.

Thanks,

Dave M.

Try here.
http://www.partsolver.com/search.asp...+Parts&s=Googl
e
I saw a manual and lots of parts. Not sure if you will find what you need.
They have a 1-800 number to call and ask for the part.


"Dave M." wrote in message
...
Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably
won't
be worth doing. However, the image geometry of the current flat direct
view
sets is unacceptable to me.

Thanks,

Dave M.

Very interesting . I work with both of these sets 02 and 03 Sony and
Panasonics from 27`` on up to 36`` all flat CRT sets . These are sitting
on a shelf in a store together with the same signal . The Panasonic
always has the better picture deeper contrast . Both sets have a very
bright picture if you like it up that bright .
The Sonys look great but kinda washed out even with the contrast all the
way up .
Customers and other employees agree .
The 36`` Sonys put out some sort of wierd signal that causes lines in
several sets on the same coax line .
The sonys sell slow because of the over high price .
I dont think much of Sharp brand tubed tv`s but their new flat 32`` set
even looks better and deeper than a Sony .

If you plopped a new Panasonic down in your house and watched it for a
couple weeks you would never miss the old Sony

If you plopped a new Panasonic down in your house and watched it for a
couple weeks you would never miss the old Sony


Since I play with DVDs quite a bit, I have to stick with Sony.

Panasonic hasn't made a 4:3 display with 16:9 "squeeze" as far as I know.

Besides, when *calibrated properly* (read with no velocity scan modulation and
proper adjustments in the user and service settings) the Sonys are mind blowing
in terms of their picture quality, especially when you see it in action with a
high resolution video source.

As for reliability, I have to agree with Mr. Caillouet. The Sonys have a
better design of the horizontal drive than the Panasonics, for instance.

Plus, with the Pannys, you still have to deal with the inherent weakness of the
shadow mask, while the inherent weakness of the aperture grille doesn't even
compare.

The 36`` Sonys put out some sort of wierd signal that causes lines in
several sets on the same coax line .

Have you tried turning off velocity scanning modulation?

As for my choice if I couldn't get Sony. I'd buy a Toshiba over a Panasonic
anyday. - Reinhart

Oh boy! I was already there. With the part number of the tube. It's not
available, but I think the manual is. Thanks anyway.


"King David" wrote in message
news:gQ1Jb.188634$8y1.605376@attbi_s52...
Try here.

http://www.partsolver.com/search.asp...+Parts&s=Googl
e
I saw a manual and lots of parts. Not sure if you will find what you
need.
They have a 1-800 number to call and ask for the part.


"Dave M." wrote in message
...
Where can I find a picture tube (cylindrical shape, 1990) and a service
manual for a Sony KV-20EXR10 on the internet? I understand it probably
won't
be worth doing. However, the image geometry of the current flat direct
view
sets is unacceptable to me.

Thanks,

Dave M.