Question about Hitachi 42HDS69 42 in. Plasma Television

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The humming noise from my hitachi 42hds69 television seems to have gotten a little louder. This humming sound is more prevelant on various stations. The humming sound seems to be normal/better on dark television stations. I have used compressed air to blow out the back of the television. This humming sound is still there even when I mute the television. To me this means it is something related to picture electronics of the TV. What should I do next to address this problem?

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Usually it means your screen is going bad unless it is a fan or some mechanical part thats humming if it comes from the screen itself the screen panel going bad.now you can check cables and eveything else for this a signal loss type of short but if you have allready checked all cables or recievers or connected devices for this then its a simple main panel humm means a bad screen panel sorry to say but i hope this helps..

Posted on Jun 24, 2009

  • t5mustang
    t5mustang May 14, 2012

    I have given over 150 answers to complaints on this forum. I use logical trouble shooting and my 38 years experience. I see the so called experts getting paid for some real dumb solutions. NOT to disagree but Hitachi has a known problem with this set 42hds69 along with other plasma sets. The power supply has an issue allowing AC spike to effect the tertiary winding on the primary transformers. Just replace power supply and 90% of the time the Buzz or hum will go away! By the way... someone at fixya said I di dnot give good advice so I quit giving it...GZZZZZ if you give advise just back it up!

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