Question about Apex Digital GB55HD09W 55" Rear Projection Television

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Problems after new ic chip install

Hi, Thanks for the suggestion on the website for replacement ic chips for my gb55hd09w television. But now after install of the new chips when i turn on the television and try to converge i don't get the red crosshairs, blue is fine, and you see three large red streaks or smears starting 1/3 in and then trailing to the right. after you exit the convergence the picture now longer has that old 3d movie look but the picture has a significant red wash. Any suggestions you have for me would be greatly appreciated.

Thanks again, David

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Did you check for open resistors in the convergence circuits? Often that is what happens when the old ICs wear out it will cause a couple resistors to burn open, and they show no outward sign of being bad. Also double check the IC pins connections for solder bridges thats another common problem, I always use a magnifying glass to double check my solder when ever I do convergence or any IC work where the pins are close. But with the streaks youre describing I would think maybe resistors.

Posted on Jun 16, 2008

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These chips are the culprit:

http://www.fixya.com/uploads/images/4790134.jpg

Replacing them requires a lot of soldering and a knowledge of circuit boards.

Is the Tv worth saving? is it bright and clear? was it good (when it worked?)
if the answer to all of these is yes, then you have a few choices. If any of these are not true, then you should just get a new tv.

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If you aren't good at soldering, then you can have a friend do it for you, or you can have a mechanic fix it. (tell them that its the convergence IC's that went bad. (pay no more than $200 for the job).


These go bad on almost all projection tvs eventually. They overheat and burn out, causing the tv to shut down when you turn it on.

If you need more info, contact me.

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