Question about Sony FD Trinitron WEGA KV-32FS100 32" TV

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I have a KV27FS210 sony wega trinitron tv. It turns on and has a single horizontal line across the center of the screen then buzzes shows a continuous zigzag line from the top to bottom of the screen with a white backround and then the line colapses with a popping sound and turns off. The light flashes two times after it's off. I have replaced the horizontal control transistor and have the same result. I believe it flashed a code 7 before the repair.

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The single horizontal line is a problem with the vertical circuit. Look for a small flat id attached to a heatsink that should be marked LA7837 or something similar. Try resoldering the pins of this IC first. If that does not resolve it, replace the IC.

Keep us posted.

Dan

Posted on Feb 20, 2009

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