Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

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Green Convergence out of wack

Model JVC AV-48WP74 48" Rear Projection Screen. First of all, thanks ahead of time for the help. I turned on the TV this morning and the screen was discolored and it looked like someone was trying to squeeze it from top to bottom. We pulled up the menu and went to the convergence setting to find the green is all out of wack. It will not allow us to select the green to put it back into place. Reading some of the other posts, I see that the IC's (don't know what those are) are major contributors to this type of problem. And by the sound of it they are not entirely difficult ro remove and replace. Please guide me in the right direction. If you need more info please ask. I have a fair bit of mechanical ability and electrical know-how and would like to do this myself vice be charged the $100.00 diagnostic and then parts and labor.

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  • Jeff Morgan Sep 18, 2006

    Thanks to all who have provided input. I still have to ask......what are IC's? Harley12 isn't sure either. Maybe you can help us both out. Thanks.

  • fball Apr 12, 2008

    how to install STK392-110

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I had a problem with my TV colors not lining up. One day I turned it on and the green was out of wack. I checked this message board and replaced the STK chips, bad soldering and all led to me just giving up on that and buying a whole new Convergence Board ($185). I replaced the missing silver box on the new board and I just plugged this in and though now my Green lines up okay, my red is out of whack. Is there something I am doing wrong? Can anyone help me? Did i miss a step? Frustrated......Bruce

Posted on Aug 18, 2007

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The convergence IC's must both be replaced as a pair. They have STK marked on them with a number after. They are black in color and stand up and are mounted on a metal heat sink. they are soldered into place, and if your not an experienced with soldering, you can easyly make this set landfill. You really should call up an authorized repairer and ask what they would charge to change the 2 convergence IC's. And this should be able to be donr inside the home as well, but alot of servicers do not do this as they make more money if they take the set into the shop.

Posted on Sep 18, 2006

  • Larry  Dillon
    Larry Dillon Sep 18, 2006

    IC's are Integrated Circuits and that means many circuits built into a single package. Do a search on the web on Integrated Circuits. It should open your eyes on this subject.

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You got me stumped now. IC? Usually all components that make a video card work are made in the video card itself. You usually have to replace the video card unless you are a electronic specialists and have the tools to soder certain parts in and out of the board. Check n see how much a video card is for your unit. Might be fairly inexpensive. Wish I could help you more. Let me know the outcome.

Posted on Sep 18, 2006

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See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

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I had a problem with my TV colors not lining up. One day I turned it on and the green was out of wack. I checked this message board and replaced the STK chips, bad soldering and all led to me just giving up on that and buying a whole new Convergence Board ($185). I just plugged this in and though now my Green lines up okay, my red is out of whack. Is there something I am doing wrong? Can anyone help me? Did i miss a step? Frustrated......Bruce

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