Question about Sony KV-32FV1 32" TV

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No power One day my Sony TV was working and then all of a sudden it wasnt. Im hoping its a bad power supply. It doesnt turn on at all. No sound, no video. Thanks ahead of time for your help.

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Re: no power

First of all check the power socket is working, by plugging something different in. Do you have fuses in plugs in the USA, like in the UK?-Check this. If you can remove the back and are safe using a voltmeter, then clip the leads where the mains should be inside the set, then plug the mains in. I say `clip' the leads on for safety, so you can keep your hands clear of any exposed voltages on the circuit boards. If you cannot find anywhere to clip to, I would advise soldering a length of insulated wire to attach the meter to, before plugging in the mains. Depending which side of the mains on off switch you are you should see a reading if all is well so far.- Try the on off switch in the set. If this is OK then go a stage further and see if there is any voltage the other side of the mains rectifier. This will be about 150 volts DC in the USA, and about 350 volts where the mains is 240 volts AC. If this is OK then you have a more serious problem, as it most likely in a short circuit line output transistor and will need a service engineer. Check to see while tracing the circiut so far if there is a fuse. Check if you can to see if the `reservoir' capacitor is short circuit or faulty- this is the capacitor just past the rectifier. If you find one thing wrong and can replace it, you will nearly always find there is another component wrong, which caused the replaced component to go wrong also,-so beware! Well good luck.

Posted on Dec 02, 2006

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