Question about Sony KV-36FS100 36" TV

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TV won't turn on, flashing red light

I have a Sony Trinitron KV-27TW77 TV that suddenly stopped working. There is a red light that flashes 4 times, pauses, then flashes again. Anyone have any ideas?

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This indicates "vertical stop," meaning that the TV's vertical output circuit is not working. A number of thing can cause this: failure of the vertical output IC or related components; bad solder connections to the vertical output IC (a common problem); power supply trouble keeping the vertical circuit from operating (also a frequent cause). Without having the set available, it's impossible to offer any suggestions for you to attempt repairs beyond looking for bad soldering. Other troubleshooting would require the circuit diagram (often available from the internet), tools and experience working on a live chassis. If you really want to keep the set and don't feel up to self-repair, it might be worth getting an estimate from a shop. These Sonys are nice sets.

Posted on Jan 23, 2009

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