Question about GE 46GW 948 46" Rear Projection Television

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Just recently my GE 46GW 948 46 in. Rear Projection Television when turned on goes from a good picture to an hour glass shape and an almost 3d like picture.When I turn it off then on I get a good picture for about 30 seconds and then BANG hourglass.

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  • rob9263 Jul 27, 2010

    OK I was lucky enough to find a service information sheet inside the TV.I found the boards you mentioned and took out the top power convergence board to look for broken solder connections but it didn't seem bad.Then I banged on both but had no change.It almost seems like It fails when it warms up..I did some research and found a post from another tech saying he has seen this problem alot with this model and it s usually one of the big diodes on the convergence power board.I have some experience with electronics but I don't have a meter to test with nor do I remember how to test diodes My only option I think is to reflow both boards...What do you think ??

  • rob9263 Jul 28, 2010

    Thank you so much for all your help.It only takes about 3-5 min from a cold start up for the pic to go bad so yea I'm thinking something is leaking voltage.I am interested in obtaining a board from you.Tell me how much and a link if I need one to the item.My E-mail is rob9263@yahoo.com

  • rob9263 Jul 29, 2010

    The TV in-question is actually a GE 46gw945 not 948

  • rob9263 Jul 30, 2010

    Sure thing......I will do it first thing 2:00pm NY time and leave it here

  • rob9263 Jul 30, 2010

    Here is the # on the Power Board 1529642D
    There is also a sticker on the Board that has a Bar code...On the bottom it reads Power 060 B 12460851382519
    I haven't taken out the Convergence board yet (lots of wires ) But if you need some numbers from that let me know and I'll try to take it out.

  • rob9263 Aug 01, 2010

    Ok great ,I will wait to see if you have one...:))

  • rob9263 Aug 02, 2010

    Strange thing happened that might help in your diagnosis..... 2 days ago after taking the power board out to get the part # for you I put it back in and had turned the TV back on and after a minute or two it turned bad again so I turned it off and then back on quickly ( 1 click ) and the picture stayed good for 2 days so I kept it on..Today I turned it off and it's back to doing the same thing.I also noticed that I can't click it back on quickly ( takes about 3 clicks ).......strange

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Sounds like a loose solder connection on the Convergence board or the convergence power board. If you are savvy and electrically safe, tap on the boards with an insulated screwdriver to see which has the loose connection, and you can resolder to fix. Repair from a service center = $150-300

Posted on Jul 27, 2010

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  • thielectronick
    thielectronick Jul 28, 2010

    Yes that convergence power board does cause issues a lot, most of the time i've seen it, it will just fail permanently. You can check for the voltage out.. should be like + and - 24 volts. If that is missing, then you know that it is on the power side. If it works cold and goes out like 15 min everytime, that does sound like a semi-conductor/diode problem. You could get a new diode and hopefully fix, a lot of those have a larger IC that could be bad, that is the part that usually fails. I always just replaced the board with a whole new one, that was before they because no longer available. If you can hit the boards and it does come back, suspect the solder and reflow the board, but unless you can get it to snap back, that prob won't fix. If you need a board, I have a used one I could sell you through ebay. Let me know how else I can help.

  • thielectronick
    thielectronick Jul 30, 2010

    Do you think you can get some of the numbers off of it? I have a couple different boards, and in my experience I think they're all pretty interchangeable.. but i'm having trouble pulling up the part numbers for specific models..

  • thielectronick
    thielectronick Jul 31, 2010

    Ok, I'll dig through and find them and see if they match up close or what. I did find some on ebay for about 50-75$ if you don't want to wait for me. I will sell you one for $40 shipped if you can bear with me. Thanks, I'll get back to you.

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