Question about Sony FD Trinitron WEGA KV-36FS120 36" TV

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Sound, no picture, Red LED 4 flashes - Sony FD Trinitron WEGA KV-36FS120 36" TV

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Hello Thanshar, Hi, you TV has sound, but no picture. this could be several things, and let us add the red led flash. In my analysis, no picture means no high voltage is reaching the picture tube. this could be due to a bad Horizontal output transistor, and/or a bad flyback transformer. This bad transistor is causing an overload to the power supply section, causing the 4 led flash to blink. Now i want to know if you want to do this service or get professional help. if you decide to do this by yourself, this needs to be performed: the Horizontal output transistor must be checked for short, the horizontal flyback transformer needs to be tested, the deflection yoke also needs to be checked, especially to horizontal coil.

Posted on Oct 09, 2010

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jingjao
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SOURCE: Sony Trinitron KV-24FS100 red light flashes 4 times

your tv had a problem.if you have a knowledge in electronics, check or replace the horizontal transistor beside the plyback. it is a black square parts with 3 pins.

Posted on Oct 14, 2008

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