Question about Toshiba 43H72 43" Rear Projection Television

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Green and pink double vision on my tv

My hd toshiba 43h72 I have had it for 5years and now it is showing green and pink and double vision. Please tell me what is going on with my tv

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This is a convergence problem. Try resoldering the pins on the convergence ICs. These are large black ICs attached to a heatsink. They should have about 15 pins and be marked STKxxx. If the resoldering does not resolve the problem, replace the ICs. These should cost about $15-$25 each.
Dan

Posted on May 12, 2008

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Upper left corner of tv is double image with pink and green


Press Menu on the remote If you see double green, red or blue letters and a part or all of picture looks double, this means the convergence circuit is the problem. A repair like this could be $150.00 and up.
If you're an electronic savvy, you can replace the two chips (stk392-***) yourself.
In this case the 2 black big convergence (both with same part#) chips need to be replaced and without the model# I can't tell which ones they are but they could be one of the following: STK392-110 or STK392-120.
Sometime the resistors around the ICs go bad and you inspect them and measure the with an ohmmeter.

Best of luck
www.aaatvservice.com

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1 Answer

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There's a possibility that you place your tv set in a strong magnetic field. eg. large electric motor. speakers. try reposition your tv set

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I know exactly which 2 dollar part you need to replace. digital-dump@hotmail.com

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Left side of screen going yellow and pink with leters in double


The convergence modules have gone bad Along with the new parts kit are fuses, diodes, and resistors that usually fry when these modules go bad. Depending on the model, there will be two and sometimes 3 of these modules that have to be replaced. Each module has 50 pins each that have to be soldered, so unless you have experience with complicated TV repairs, the cost to do that repair may be as much as a flat screen TV of the same screen size as yours.

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There are problems in the vertical blanking or scanning circuits. This is not something you can fix yourself at home. It involves troubleshooting the deflection amplifiers and scan generator areas to locate the defective components.

You will have to give the set out for service. I would suggest to get an estimate before proceeding. This type of repair can be costly for the labor to find the fault. If it is only generic type parts involved, the parts themselves will not be too expensive.

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1)Check for coolant leak from CRT onto signal board

2)Possible convergence problem ..................T.

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