Question about Toshiba 42H81 42" Rear Projection Television

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Colour problem My Toshiba tv all of a sudden the colour went wrong, there is a wave at the bottom of the tv screen and the colour green is all over the tv and picture is a little blury, it looks like maybe a colour was blown? does this sound accurate as to what happened? the colour seems all out of alignment and I tried to adjust it but it wont nor will it reset. Time for a new tv?

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  • Halfdedtshba Jan 08, 2009

    Sounds like I have the same problem. the blue and red guns seem to be aligned as normal, but the green is way off to the right. I don't have any speakers near it that haven't been there for years without issue. I cycled power about six times, and scolded my vacuum cleaner. I feel like I've gotten my moneys worth out of this thing, but would like to fix it if I can. Any other tips? 

  • Anonymous Jan 27, 2009

    I have a 42H81 from 2002 and it just yesterday started showing a wave of non-aligned color on the lower left corner of the screen. Touch focus doesn't do anything and manual adjust will not overcome the issue. I am looking for a DIY solution or a heads up on a reputable in house tech on Long Island NY

    Thanks

  • salah_siyam1 Jan 30, 2009

    My 42' Toshiba projection TV was working fine, yesterday when I turned on my satellite receiver all of a sudden I get this wave at the lower part of the screen and wrong colors!! How can I solve this problem??

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colour problem - 6b5ee7e.png You may have a convergence problem. Here are some of the most common symptoms.

  • 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 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.

Posted on Feb 05, 2009

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Did you move the TV with it on, or place a speaker near it? Unshielded speakers will cause the colours to do like you describe. Also sometimes a vacuum cleaner can cause this. The solution is easy. first, try moving any speakers away. if that doesn't help. Cycle the power several times [some TV have an internal degausing coil, but it is not very powerful.] the last reort is to have a tech perform a degausing for you. This is done with an electro magnetic coil. If this doesn't help, then either you described the problem in too few details or I misunderstood your description.

Ken

Posted on Jan 01, 2009

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