Question about Polaroid FLM-3734B 37 in. LCD HDTV

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TV will not come on and there is a buzzing sound when it does

Sometimes it works but mostly it doesnt.

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You may have the extremely common power supply failure. They capacitors have been going out quick and also overheating causing tv not to stay on or power on at all. You can test it with voltmeter to see if it is putting out power.

Posted on Sep 09, 2009

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Westinghouse tv power box making buzzing sound


Hi I'm Peter, There is a bad connection and most likely the buzzing sound is a relay going bad internally.

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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

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1 Answer

Im having a problem with some sort of power issue, sometimes it works and sometimes it just doesnt come on. i can hear a buzzing noise but it doesnt spin can you help thanks


Hi!
I think I had this kind of issue before on my computer. I sorted it out. First I check the motherboard and wiring inside if there are any wires touching the fans because of the buzzing sound. Found nothing. I noticed that the buzzing sound came from my hard drive. It seems that it's not getting enough power that's why its struggling to spin. What I did was I changed my power supply to higher wattage and everything was fine after that. You can give it a try though. If it still the same issue, you might as well try a different hard drive.

Regards!

Feb 14, 2011 | Computers & Internet

1 Answer

Buzzing sound + Tv picture is very weird.


Hello,

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GOOD LUCK

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Buzzing could be related to the lamp/ballast connection. Try removing and reinserting the lamp look for arching marks on the contacts that would suggest that the connection wasnt good.

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Buzzing sound from my tv


tv makes a buzzing sound when i turn on the set, than stops.

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My tv is buzzing and doesnt show a picture


sound like u have a bad flyback xformer also u need to replease horizontal output xsistor

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1 Answer

Buzzing from tv


If the TV is working normal otherwise then most likely you have a A.C. transformer or choke that is vibrating at 60hz or what they call the deflection yoke is buzzing. Niether issue is easy to get rid of. If the buzz is comming from the speakers, make sure you have the connections to the TV are correct.

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