Question about JVC AV-56WP30 56" Rear Projection Television

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Where is the horizontal transistor

Replaced the convergers/resistors. Was having trouble getting the curve out of the picture, the picture was very good, went to regular programming and suddenly the tv went black. Blue indicator light was still on. Someone suggest the horizontal transistor may be out, where is it. I could not locate it in the manual.

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Cheap convergence IC's made repair more difficult.......
read some of my convergence repair solutions.............T.

Posted on Mar 23, 2008

  • Vista Electronics Mar 23, 2008

    Horiz out not at fault.....................T.

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You can follow from fly back the B+ supply is directly connected to the horzontal out put transistor.

Posted on Feb 14, 2008

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1 Answer

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U used every components,that came with that kit?Grounding ur self.Used a low wattage soldering iron resoldering the convergence ICS again,no matter what the resistors are in torrence or not replaced all of the resistors,still have the same problems.The 2 convergence ICS got to much heat and stastic ectricity charges it it shorted and kill the 2 convergnce ICs.

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The convergence wont align the horizontal blue is curved and 3inches away from center and the vertical blue is slightly curved


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Picture looks curved (concave curve) on my sony KP-46WT510


You may have a convergence problem. Here are some of the most common symptoms and example photos.

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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DA, convergence circuit has failed, the IC`s and possibly a couple of support resistors need to be replaced, your right about it being a good set, 6 years is about average for convergence IC`s, call your local shops for a few estimates and get it fixed, it will run for a lot longer than 6 years, hope this is the advice your looking for, e-mail me if you have more questions, BMW Rider

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1 Answer

Rca ctc 169


Did you replace the STK convergence IC's yet? If not, thats your trouble, or you have a plug in the wrong place. i doubt if the yolk is bad, as that would most likly blow out the horizontal output transistor and the set would be dead. Good Luck, Please do not forget to rate this thread.

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