Question about Hitachi 53UDX10B 53" Rear Projection Television

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TV has dim picture

Hi, I was given a Hitachi 50UX22BA. It has a very dim/dark/shadowy picture. However, if I stand in front of it, at just the right angle, I can see a picture through the middle. Although the picture is grainy and saturated with strange color. Could this be the convergence problem that many of the Hitachi have? Also the sound and the remote is not working. Not sure if it is related. By the way, I checked for any bad or bulging caps, but all look good.

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  • Darin Sandidge Aug 08, 2006

    Hi Techman,

    Thanks for taking time to answer my post. I was speculating on the tubes being weak aswell. However when the "Magic Focus" is pressed, all three colors come up and display brightly. I also suspect the power supply just as you.
    My question is basically - Has anybody seen this issue before? If so, what was your solution? I have the schematics and can track down the problem, but I'm tring to save some time. I appologize for my rudimentary problem description - repairing this on the side while doing everything else I need to do.

    If you are concerned that I might light myself up, I can understand. I used to repair televisions over 15 years ago and I understand the dangers. I've had my share of jolts and have the curly/wavy hair to prove it. If you have experience with these models, I would really appriecate your input.

  • Darin Sandidge Aug 15, 2006

    OK, I found the solution. Techman was on the right track regarding the power problem. A 9V regulator (I503) had cracked solder joints connecting it to the board. Resoldered them and the TV fired up with no problems. On a side note, the remote control was also dead, but I'm not worried about that since universal remotes work with it.

    Thanks guys for your help!



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Well excuse me but if you got the esquematic lets analyse this problem, first we got signal(you can see the picture) if got picture the sound signal is there (they tavel both the same way audio in a sub)then we got swept both vertical & horizontal (you see the picture) what we dont have? asignal amp,(thats the snow) good control of the 3 canyon so thats a comun problem for all 3 canyon, then we have to check for voltage reading in video amplifire it are not working ok and check for a leak capacitor in coupling circuit in the amp circuit what else ? did I over pass something? hope help you ...good luck... post back

Posted on Aug 08, 2006

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The picture tubes are weak or there is a problem in the power supply. you may not see a bad capacitor as all caps do not swell or leak when they go bad, If you have no TV experience, A TV set is not a place to experiment with.

Posted on Aug 07, 2006

  • Larry  Dillon
    Larry Dillon Aug 15, 2006

    Glad to hear you fixed it. If you want the original remote to work the menu and such go to



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