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Buzzing sound coming from unit - Sanyo DS25390 TV

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You may have an issue either with a transformer or a capacitor in your power section, or there may be a cold solder joint or bad ground in your audio section. Unless you have the experience and tools to work on the power board I would strongly advise against trying to fix it yourself. There are lethal voltages inside TV's that must be dealt with correctly.

Posted on May 29, 2010

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I checked my speakers there not blown out still making buzzing sound. Why?


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Sounds like it could be a effiency function to warn you that the heat elements are on. Check your thermostat manual and see if you can turn this feature off. If this is not a feature then the thermostat may be wired wrong or something in the circuit may be trying to short out.

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Sounds like compressor is bad...taken out by a bad contactor.

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The compressor is not coming on and some part of that unit has failed. Do you hear any clicking sounds along with the buzzing sound? Recommend that you shut the unit down (remove power from it) until a service tech can listen to it try to start up.

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There's a buzzing sound coming from my central air conditioner unit outside. The fan is quiet but I hear a buzzing sound. Should that be happening? Sounds like there's something loose.


Things that are not broken: The big relay that powers the compressor often hums or buzzes when the unit is running. Several brands of heat pumps keep their reversing valve "on" any time the thermostat is set for "cool". They buzz, too.

If something really is loose, the only way to fix it is to look at the machine and take off panels until you find what is buzzing.

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The buzzing is your compressor trying to start. It is going off on internal overload caused by heating up of the motor windings.If you have an amp meter you could check the amp draw of the comp against the locked rotor amps listed on the tag You could try to have someone test your run capacitor, which looks like a can. Could be round or oval with wires coming off it. Or try a hard start capacitor and relay to bust it loose if compressor rotor is stuck. If that doesn't do it the comp is bad.

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Even when the power is off at the unit outside the thermostat will supply power to the contactor of the outside unit. This may give a hum or buzz as you stated. If when the power is on to the outside unit the fan tries to start but only hums the motor may be bad. Does the compressor start and run?

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It is probably the color wheel that needs replacing.

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