Question about Hitachi 42PD9700 42 in. Plasma Television

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When i turn on my 42 inch hitachi pd9700 tv it makes a fizzing noise from the back.after 10 mins it gets louder until its like a high pitched whistle.then when i try to turn it off by the remote the picture goes off but not the noises it makes and the standby light flashes between green and red.thanx :)

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  • Hitachi Master
  • 8,457 Answers

This problems it the cause by the power supply board.Those transformers on the power supply board is the cause.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Posted on Oct 17, 2010

  • boomtown1983 Jun 07, 2011

    i took the hitachi 42pd9700 to a tv repair man and said there is no problem with power board, and can't find any thing wrong with the tv at all, but it still makes a high pitched noise, I googled the problem and there seems to b a lot of people with the same thing going on with this model,but still no fix so any help is welcome,

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