Question about Toshiba 42H81 42" Rear Projection Television
My dfaughter has the same problem. I looked up her TV manual on the internet.
You can download it on the above link if you don't have your manual. On page 25 of the manual it says to press TOUCHFOUCUS button on the TV once. The TV will enter auto-convergence mode and adjust convergence automaticly. That button is lacated to the right of the TV power button (you may have to flip open the cover door on the right of that power button). It will be the last button on the right.The TV has to have been on for at lest 30 minutes. When you press that button a screen will pop up with the words TOUCH FOUCUS. When finished the screen will have TOUCH FOCUS FINISHED. If an error come out press that button again.
This color convergence meens it will adjust the three red, green and blue colored light bulbs to converge together on the screen at exact precision to produce exact color. I have to admit I have not gone to my daughter's housr yet to do this. Good Luck to the both of us.
Posted on Feb 24, 2010
I don't know your model, therefore I will tell you genericaly what the problem may be.
There are many things that can cause this type of fault. The response of the video amplifier stages would have to be checked right up through to the output that drives the projection. it is also possible that there is a fault with the colour demodulator. If the set uses projection tubes it is possible that the tubes are weak, or there is dirt in the optics. Colour demodulation problems can also cause the colours to not be correct. Many models using tubes have an optical transparent cooling fluid in front of the tubes. This fluid may have to be changed.
Posted on Feb 23, 2009
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Posted on Jan 02, 2017
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