Question about Toshiba 42H81 42" Rear Projection Television

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Toshiba 42H81 - Constant jumping picture on scren

The picture just keeps jumping on my Toshiba 42H81. The TV will show perfect for about 2 hours, then the picture starts jumping. If I turn off the tv for a few hours, when I turn it back on, it shows good for about 30 minutes, then the picture starts jumping again. Now the jumping is constant. Last year, I had the same problem and I paid a repair man $400 to change the original board with a refurbished board. However, it seems like the problem has reoccurred. Can someone tell me what is the problem here or is this tv a lemon? It doesn't make sense to me why would I encounter the same problem if the whole board was changed. Walt

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  • Walt James Dec 11, 2006

    Thanks for responding.

    Approx. how much will it cost to purchase the hyper module and the stks packs? Is this a big job for a repairman?

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It needs the hyper module replaced might as well have em do the stk packs too its too old to be a lemon the part that was replaced was not new it was in someone elses tv and had problems there too the trick is to find someone that will fix it so it lasts

Posted on Dec 09, 2006

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Posted on Jan 02, 2017

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Hi Recently i turned on my TV and the picture was crystal clear as always, but then i turned it off for 20mins turned it back on and now the whole screen is messed. it shows a double of everything and...


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1 Answer

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Sounds like a vertical sync issue on the chassis board. However you also mentioned the picture moves left to right or vice versa which would suggest a horizontal sync issue. Either issue is not repairable by the DIY. Sync issues must be isolated using test equipment usually found in repair shops. My suggestion push it down a hill and enjoy the show then go buy that flat screen you almost purchased last week.

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Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
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