Toshiba 42H83 42" Rear Projection HDTV-Ready Television Logo
mike jackson Posted on Jun 25, 2007
Answered by a Fixya Expert

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Red spot in the middle of the screen

My toshiba 42h83 has a red irregular shaped area in the middle of the screen. at first i thought the kids used markers on the screen but after removing the screen and cleaning it and the lenses the problem still remains. there is also faint green green lines in the background

  • mike jackson Jul 01, 2007

    thanks for the help you were right on the money!

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1 Answer

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  • Master 3,130 Answers
  • Posted on Jun 25, 2007
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You most likely have a burn in on the surface of one of the picture tubes. What you need to do to confirm this, would be to take off the front screen, and with the set turned on, look directly into each one of the lenses, and see if you see a mark on the green or the blue tube. if this is the case, and I am pretty sure it is, the picture tube will need to be replaced, but this set is not a young thing, as the green faint lines is most likely a bad capacitor in the screen drive circuit. If the picture tube is indeed burned on the surface, most likely be better off buying a new TV set. Good Luck

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Your TV most likely has a Convergence Chip Failure ( common problem )

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2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.
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