Question about JVC AV-48WP30 48" Rear Projection Television

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Convergence I'm unable to make any convergence adjustments.  I no longer have the manual so I was happy to find one here; however, on page 50 that has the instructions, the graphic showing which keys to use to make the verticle/horizontal adjustments is missing. Can you help me figure this out?  Thanks.

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  • NLCope Dec 28, 2007

    No, I have not made any repairs. I had this problem once before and a panel needed replacing. Once done, the technician, adjusted the convergence using the +, on the convergence menu. I was hoping to make similar adjustments without an expensive repair call. I did not expect to have to shell out $400 every 2-3 years to solve this problem. This seems to be a common problem. I understand the repair involves soldering, etc....something I'm not comfortable with.

  • cmc127 Dec 29, 2007


  • cmc127 Dec 29, 2007


    I have a JVC 48 inch rear projection tv (model # AV48WP74) and all of the colors have separated. There is also a bow in the picture at the top left and bottom left. I can't correct it using the remote. From what I have read, it seemed like the convergence has gone bad. After figuring this out, a local repair shop said it was the convergence and the bow represented a bad power supply as well.

    Would it be possible to buy the whole board with the heat sinks and replace it? Does the board plug in or does it need to be soldered? Would there be anything else I would need to replace? If the tv turns on and there is a picture (although colors are messed up), would the power supply be bad too?

    The repair shop wanted $400 for the repair. The t.v. is 5 years old...and the cost seems too much!

    Thank you!!



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If a convergence issue exists, alignment is secondary to the did not indicate if you already repaired problem
and are now doing final re-alignment.....T.
Usually, two STK IC's are replaced............................

Posted on Dec 26, 2007

  • Vista Electronics Dec 28, 2007

    Sorry to hear you have a common problem re-occurance....

    FYI....Basic reason for short-term failure of IC's is use of poor quality generics by well-meaning repairmen trying to hold down

    the estimate to the customer....My approach is to offer upgrades

    if available then first quality originals and NEVER use seconds..

    Your part # is STK392-110.....can be upgraded to STK394-160E. Sanyo with Hitachi name = Part # CZ 01341..........

    2) The complete circuit board can be replaced..last two or three years because it is the same or less quality as original.......

  • Vista Electronics Dec 31, 2007

    PS The power supply referred to is replacement of usually one

    resistor ....cost < $1.00......No big deal........good tv ...sorry to

    hear you are giving it up...................T.



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