I have a Sony KV-36FV1 television that has a vertical sync problem.
Most of the time it is ok but every few minutes, the picture jitters up
and down for several seconds. Sometimes the picture will "lock" halfway
down so that the bottom half of the picture is on the top and the top
of the picture is on the bottom.

I've seen service manuals for similar models of televisions. They make
reference to a VFRE option (vertical frequency adjust) in the "service
menu". I think that is what I need to adjust but it doesn't show up in
the service menu for the KV-36FV1. I have tried the following options
but they don't seem to fix the problem.

VSCO VLIN VCOM VSIZ PVSZ VPOS VHRE VHG VAPI VAPG VTRR

Any suggestions???

Landson

Don't "tweak" the service menu, unless your'e SURE there's a problem, &

that's not likely! Solder the vertical IC....that SHOULD fix you up!
Dani.


landson wrote:
I have a Sony KV-36FV1 television that has a vertical sync problem.
Most of the time it is ok but every few minutes, the picture jitters up
and down for several seconds. Sometimes the picture will "lock" halfway
down so that the bottom half of the picture is on the top and the top
of the picture is on the bottom.

I've seen service manuals for similar models of televisions. They make
reference to a VFRE option (vertical frequency adjust) in the "service
menu". I think that is what I need to adjust but it doesn't show up in
the service menu for the KV-36FV1. I have tried the following options
but they don't seem to fix the problem.

VSCO VLIN VCOM VSIZ PVSZ VPOS VHRE VHG VAPI VAPG VTRR

Any suggestions???

Landson

Dani,

Thanks for the info.

It's been many, many years since I was a tech and did any serious
electronics repair. Could you give me some pointers on what type of
chip ( manufacturer, part#, package type, etc) to look for and where?

Landson


Dani wrote:
Don't "tweak" the service menu, unless your'e SURE there's a problem, &

that's not likely! Solder the vertical IC....that SHOULD fix you up!
Dani.

You were a tech and you can't figure out which chip is the vertical output
IC? Do you know what a yoke looks like?

Leonard

"landson" wrote in message
ps.com...

It's been many, many years since I was a tech and did any serious
electronics repair. Could you give me some pointers on what type of
chip ( manufacturer, part#, package type, etc) to look for and where?




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