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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WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
Instruments http://www.zoom-one.com/glgtech.htm
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"mike" wrote in message
om...
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