Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

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Rear projection tv

Blue and yellow out of focus in semi circle at top and bottom of picture

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You Tv has a bad chip ( I recommend you replace both on the convergence board ). 80% or more of the projection sets I get into my shop have this same problem and by replacing the convergance chips, it normally corrects the problem. If you are going to preform the repair yourself, be sure to use lots of heat sink grease to prevent the problem from happening again and I always suggest you use the original chips ( same numbers ) as the after market parts don't always work well. As a pre caution, always remember to unplug the set before doing any work inside the set. Good Luck
Ed
NC Electronic
Mills, Wyoming

Posted on Jan 08, 2008

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1 Answer

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1 Answer

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Good Day,

Does the blue spot have tin white lines?? Is there a picture behind the 'circle'? You may a blue crt (tube) problem.

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1 Answer

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1 Answer

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1 Answer

Horizontal hour glass picture


The convergence Ics need replaced. In Hitachi, resistors and sometimes a coil needs replaced as well. The convergence/deflection PCB is available, but, the cost of that board is higher than having a servicer come to your home and repair the unit to component level. If you are not familar with this circuit, then call a servicer. Have them replace both ICs not just one. Make sure they are repairing to component level and not replacing the board. Hope this helps.

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