High pitched squeal coming from power supply on my philips VCR

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It sounds like either a mechanical failure shutting the machine down or the switch mode power supply just gave out. Repairing VCR's is not worth the charges these days BUT head to your local Goodwill store. There you'll find a stack of good VCR's for less than $10 each.

Please supply the model number so we can help further.

if a high pitched whine or buzz it is likely coming from the power supply board.

The power supply is starting to fail. There are a number of capacitors in the power supply that need to be replaced. A local repair shop should be able to fix this easily. Figure on $10 max for parts.

Dan

sounds like the switchmode power supply is varrying in frequency ..needs to be checked by qualified tech,,,

I had the same problem, it is a Diode on the Power Supply Board. The Location number is D1054, you should change C1051 also. It maybe leaky. I used a 10v 1000uf capacitor instead of the 6.3v 1000uf it had. Make sure to be careful when changing these components, making sure the polarity is right. Good Luck!

I have never heard a tube make noise when there is a good picture. Anyway, the noise has to be a transformer ringing or oscilating. They make a high pitched squeal when they have a loose winding or their cover is loose. You probably won't be able to feel or see anything loose on these transformers The power supply switching transformer is the first to look at. Take a hot glue gun and just cover the thing...especially at the base of it. The next (and only other) one is the horizontal drive transformer.It is located close to the high voltage transformer( biggest thing on board and usually in back or corner of the PCB.This one wont squeal) The horizontal drive transformer is about the size of a large marble and is encased in a black plastic cover. Cover it with hot glue also.
If you take the back off you will probably be able to localize where the squeal is coming from. You will probably need a signal to hear the noise also. After you find where it is coming from UNPLUG the set before doing any hot gluing!!!!
If you 're not up to this procedure take it to a technician. Your tube is not going bad and the set is definitly worth repair. Simple fix!! Good Luck!!

barneyluc

you have a shorted out power supply and probably some blown resistors

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