Question about Toshiba 55H70 55" Rear Projection Television

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Toshiba 55'' rear projection blue shadow

We took the back of the tv off and there were 3 colered circles. The blue one has lines going through it. Can we adjust it or buy a new one>

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What are the colored circles youre talking about?

Posted on Nov 30, 2008

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If 3 d looking or colored lines etc on this model listed here it is a convergence problem and fixable.

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The problems ur tv have is known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look like.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced these parts on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

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Blue tint across screen and black shadow of sort


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

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1 Answer

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sounds like convergence amp ic's
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.ht
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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