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Power supply makes a buzzing sound,does not produce electricity,how do i fix it?

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It's one of two things, you have something loose and your fan is rubbing on rubber in there, you just need to take it apart use some air duster and dust it out and see if anything is rubbing or second option is that your power supply has gone out completely and will need to be replaced.

Posted on Jul 24, 2013

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1 Answer

Why is their a buzzing noise when my flatscreen Samsung tv is on


Usually the sound is coming from the power supply board in the TV--a transformer is vibrating hard enough to make it--had a lot of new ones in warranty that worked perfect but had a buzz---replace the power supply board and problem usually is fixed.

Apr 10, 2012 | Samsung Televison & Video

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I have a proscan 42LA45H 42 in television that has started making a buzzing noise from the back. What is causing this, and what do I need to do to fix.


Hi
If picture and sound is Ok, and only this buzzing sound is heard from the back of the TV, It should be due to core soose of some ferrite cored transformers inside, especially to the power supply regulator board of the TV. Open the back cover of the TV and swtich it ON. Listeen very carefully which transfromer makes the buzzing noise. Just trouch and press the core of the transformer suspected with some non-cunductive material like glass rod, or a stick of dry wood. You can identify the transformer that makes noise by this way. After identifying the exact transformer; switch OFF the set, unplug it from mains socket, apply some "Super Glue" like fast boanding glue to the joint of core of that transformer. Allow sometime for the glue to set. This will solve the buzzing sound problem of your TV. OK

Jul 13, 2011 | Proscan 42LA45H 42 in. LCD TV

1 Answer

When i plug my wharfdale digital radio in the mains it makes a loud buzzing sound yet works perfectly when using battery power


I assume you are talking about listening on the set's own loudspeaker.
The power supply for the receiver is faulty, it is not producing a nice smooth DC like it should. Is it an external supply? If so try a new one, if not there is a faulty component in the radio power supply.

Feb 02, 2011 | Audio Players & Recorders

1 Answer

When the door is closed it makes a buzzing noise, the micro still works and the noise goes away when turned on and used


> the noise goes away when turned on and used
Is it possible that the other noise produced when using the oven are only covering up the buzz?
I think your microwave has two power supplies; one that supplies the low voltages for the display and control, the other for the magnetron. The first supply may be a standard line frequency unit using an iron-core transformer and if these are cheaply made, the laminations can vibrate and cause a 'buzz.' Better transformers are 'potted' so that the laminations are glued together with epoxy and can't vibrate. On later units, the magnetron voltage is produced by a 'switched mode' power supply that uses solid ferrite instead of iron and never vibrate.
If it was my unit, I would take it far enough apart to run a couple of beads of epoxy glue across the laminated transformer to kill the resonance.

Nov 15, 2009 | GE Profile Spacemaker 1.8 Cu. Ft....

1 Answer

Surround sound does not work


If there are any power cords from other components near speaker wires the electric interference transmits through speaker wire causing a buzz.

Aug 20, 2009 | Denon AVR688

2 Answers

Buzzing sound through the speakers effecting all input components


hello

The buzzing sound that you have mentioned may be due to following reasons.
  • The power supply may be internally producing spark or power lines are damaged.
  • There may be some connector which is not connected properly. Check the connectors which connect the speakers to the audio system.
  • Any of the connector may be damaged. Again check the connectors.
  • Check your power supply.There may be some sparking or adapter not connected properly.
  • If these are not your solution then your connectors are damaged internally.
Hope this will solve your problem.

Thank you

Aug 15, 2009 | Sherwood Audio Players & Recorders

2 Answers

I have a Frigidaire sidexside, purchased in May 2005. The compressor does not come on, and will produce a 'buzzing' sound for approximately 17 seconds. Then the 'buzzing' sound will cease and all is quite....


sorry to tell you that your compressor is bad, what you are hearing is the compressor trying to start, but unable due to shorted windings. not a cheap fix. sorry.

Mar 30, 2008 | Refrigerators

3 Answers

Ilo dvd recorder is not working


Double check all you audio cables

Dec 20, 2007 | iLO DVDR05 DVD Recorder

2 Answers

Buzzing noise with no picture or sound.


The power supply is telling you that it has a short. I think you have a bad high voltage transformer in the horizontal deflection circuit. I've repaired several RCA's with this very same problem. The newer RCA's are vert prone to high voltage transformer failure ! Stargazer

Aug 20, 2007 | RCA F36649 36" TV

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