Help Sony KV-9200 TV

[David Dropp]

Looking for help repairing a Sony KV-9200 9" TV. I have a problem with some
lines at the top of the screen (? retrace lines) that go away after it warms
up. I've changed all the electrolytic cap on the video board and replace a
defective resistor in the verticle section which was my main problem. Thanks
for any help. Dave

 

[john]

You have missed some caps.

kip

--
"Watch the return E-Mail addy its false"
"David Dropp" <ddropp@tds.net> wrote in message
news:_K_Ua.23667$vx3.6334210@kent.svc.tds.net...

Looking for help repairing a Sony KV-9200 9" TV. I have a problem with
some
lines at the top of the screen (? retrace lines) that go away after it
warms
up. I've changed all the electrolytic cap on the video board and replace a
defective resistor in the verticle section which was my main problem.
Thanks
for any help. Dave

 

[David]

I have done lots of those. Virtually EVERY SINGLE electrolytic capacitor in
the set is BAD. Save your time in trying to troubleshoot it, get out a good
ESR meter and start checking EVERY electrolytic capacitor.

It has been my experience that SO MANY are always found bad that it is more
cost effective from a time standpoint to simply replace virtually all of
them, especially the 1uf 50v ones that are all over.
David

David Dropp <ddropp@tds.net> wrote in message
news:_K_Ua.23667$vx3.6334210@kent.svc.tds.net...

Looking for help repairing a Sony KV-9200 9" TV. I have a problem with
some
lines at the top of the screen (? retrace lines) that go away after it
warms
up. I've changed all the electrolytic cap on the video board and replace a
defective resistor in the verticle section which was my main problem.
Thanks
for any help. Dave

 

[Jerry G.]

In these sets, the caps in the vertical deflection output circuits tend
to go a bit high in ESR and become thermo sensitive. You would have to
locate and change these to fix the fault. Heating the caps with a heat
gun, and then testing them with an ESR meter is the easiest way to fine
these rather than change many caps, and take the chance of missing the
bad ones.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
==============================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
Instruments http://www.zoom-one.com/glgtech.htm
==============================================
"David Dropp" <ddropp@tds.net> wrote in message
news:_K_Ua.23667$vx3.6334210@kent.svc.tds.net...
Looking for help repairing a Sony KV-9200 9" TV. I have a problem with
some
lines at the top of the screen (? retrace lines) that go away after it
warms
up. I've changed all the electrolytic cap on the video board and replace
a
defective resistor in the verticle section which was my main problem.
Thanks
for any help. Dave