Question about Sony FD Trinitron WEGA KV-36FV300 36" TV

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Blank screen My 5 yr old sony kv-36fv300. I turned it off one day and It has never turned back on. It sounds like it is trying to power up but there is never a picture or sound. Tried the resset button but the power light just flashes. Thanks T

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Re: blank screen

These tvs are known for bad power supply capacitors. Try power cycling the tv several times (8-10) to see if it finally comes up. Four flashes indicates a power supply problem or a deflection problem, usually it is the first. Take the set into a shop if you are not an electronics technician, as these are dangerous areas to work on. Otherwise, use a capacitor checker to test the caps, starting with the main supply caps which are usually 200v. I've found these to be low by 200uf. Also, check the 1000uf and 2200 uf caps. These will be low by 100 - 200uf.

It could be a flyback or deflection problem, but check those caps first.

Posted on Jan 22, 2008

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