Question about Sony FD Trinitron WEGA KV-36HS510 36" TV

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Sony 36 in.tv

The picture flashes on and off,sometimes stays on for a few minutes.can not set time on it because it won't stay on long enough to program it.

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This is usually an indication that the picture tube is starting to fail. A short term "cure" is to increase the screen voltage a bit. This is done by opening up the back and turning the screen control on the flyback transformer clockwise slightly. The flyback if the large part with the red wire coming out of the top that goes to the side of the picture tube. Please note that you only have to turn this control slightly. Ity should be the top control on the two on the flyback. The other is for focus. Also note that there is extremely high voltage there (15,000V) that can be dangerous. If turning up this control resolves the problem, you have bought yourself time to find a replacement only.
Dan

Posted on Jun 02, 2008

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