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Noise from TV

TV is making a high pitch noise. It goes away when I hit the back of the TV. It's driving me up the wall.

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  • cmfosmire Nov 28, 2008

    I have a Samsung TX-R3080 that makes a hig pitched noise at random times.  Sometimes lasting for over 20mins.  I mute the TV and turn off all other electronics and it is definately coming form the TV.

  • bripie Mar 04, 2009

    txn3071whf samsung 32". what is the high pitch noise?

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  • Master
  • 373 Answers

I may be able to help if you could give me the make and model.

Posted on Dec 29, 2007

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Funai tv. When plugged in, makes ear piercing high pitched buzz that goes away when unplugged. Will not respond to buttons. No picture or power. Already replaced power board. What now??


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It sound like you may have sound processor problem which is part of the main board, I would also look at the 12vdc from power supply to make sure it is clean DC.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=l37hdtv10a

http://en.wikipedia.org/wiki/Capacitor_plague

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If the rest of the laptop does not appear to work, the DC-DC step down power circuit is probably shot, which will also make a high pitch noise. In this case, you will have to replace the motherboard. Replacing a motherboard is a major pain in the behind. In most case, it is not worth the trouble if you have an older model.

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the only two moving parts in a computer are the cooling fan and the hard drive.  Some fans have two speeds. 

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Horizontal output transistor is shorted,caused by bad flyback
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