Question about Toshiba 50H82 50" Rear Projection Television

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Toshiba 65hdx82 convergence problem, pincushion

The picture on my Toshiba 65hdx82 has gone screwy; it's pincushioned badly and the convergence is off and changes from time to time. Manually adjusting convergence both red and blue move. I also found enough information on the internet to get into the service menu and do some convergence adjustment there--just enough to see that all three move.

I've read that one color not moving is a tell tale of bad convergence amps but they all move. Does anyone have any suggestions? I have seen some vague references to bad eproms on the digital convergence units but not enough information to really be helpful. Also, I can't find the service manual for this unit. If anyone could send me one that would be FANTASTIC. I do appreciate any help I can get. THANKS

I am pretty good with a soldering station and desoldering tools, have a fluke multi-meter handy, and even a tektronix scope if need be. :)

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Your TV most likely a failure in the convergence circuits. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

Toshiba 65hdx82 convergence problem, pincushion - 3dc9420.jpg

0dcec37.jpg
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 Toshiba 65hdx82 convergence problem, pincushion - 0667c5f.png chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Posted on May 22, 2009

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Posted on Jan 02, 2017

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