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LG TV LCD 47LF65 makes a strange noise

I have a LG TV LCD 47LF65 for about 2 months and i noticed that when i turn down the brightness from 85 below ( i use 75) it makes a strange noise. not to loud but anoiyng. can someone tell me what to do to solve this problem? or is it supose to do this noise?

thaks in advance

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  • sarita37 Apr 26, 2009

    I have a lg3750 it makes a huming noise,why is that. it only happens when i turn the tv on. I have had it since Febuary. Can someone tell me why it does this?

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  • 88 Answers

It should make a little noise, but if it is annoying then it is probably an issue - this is most likely the power being reduced to the inverters when the birightness is turned down. Could be a noisy coil on your power board or a capacitor may be going bad and changing value. I would look for any swollen capacitors (a bump on top, bursted or swollen sides) on the power board.

Posted on Jan 07, 2009

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