SONY GDM-FW900 Brightness issues Strange!

[mike]

I have a 24" Sony flat trinitron monitor, model GDM-FW900 that has the
following symtomps:

There are several horizontal strips of the reduced brightness. One
large strip(2") is located on top, and there are several smaller
strips(1/2") between center and top of the screen.

I still can see the text in those areas, but it is approximately 35%
darker. This problem appears when monitor warms up. There is slight
vibration of these dark horizontal strips. The text behind doesn't
move.

Any ideas? Anybody has a schematic they would be willing to share?

Thanks

 

[Jerry G.]

Check for high ESR caps in the power supply and the horiz scan, and blanking
areas to start with.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
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"mike" <rubicinc@yahoo.com> wrote in message
news:6ee2d9b8.0309240814.25d31efe@posting.google.com...
I have a 24" Sony flat trinitron monitor, model GDM-FW900 that has the
following symtomps:

There are several horizontal strips of the reduced brightness. One
large strip(2") is located on top, and there are several smaller
strips(1/2") between center and top of the screen.

I still can see the text in those areas, but it is approximately 35%
darker. This problem appears when monitor warms up. There is slight
vibration of these dark horizontal strips. The text behind doesn't
move.

Any ideas? Anybody has a schematic they would be willing to share?

Thanks