Question about LG 52SX4D 52" HDTV

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New lg television no sound no picture making a buzzing sound

New lg television has no sound and no picture making a buzzing sound. It's a 52 inch high defintion tv

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Rf modulator is faulty take the set back

Posted on Dec 15, 2008

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Why does my 42 inch lg tv make a buzzing sound that flickers high and low and even when the power is off


Sounds like a relay or transformer that is on its way out. I would suggest taking the set to a TV service Agent and getting it sorted before it dies altogether.

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If it has been moved or bumped recently the sound you are hearing is the main HT lead that has been displaced. TGhis is a blasck lead with a rubber disk surround at its end that fits into the picture tube. Do not touch without turning TV Off and using rubber gloves to reinsert.

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open it up and see if any liquid is spilled on the boards, most squeals are from the high voltage transformer and or splitter

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