Question about Toshiba 42H81 42" Rear Projection Television

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Miorror adjustment the red and green are out of register? I was told the mirrors were out adjustment. How and where are the adjustment screws? Can anyone help me . Thanks in advance Robert

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Re: miorror adjustment

The mirror is anchored against the rear wall of the units case. If you take the back panel off you should be able to look up at the back panel and see the mirror brackets. It may turn oyt that your convergence amp ICs are faulty, thats usually the case in Projection units. You cant adjust your mirror only tighten it if its loose.

Posted on Jan 17, 2008

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Mitsubishi Convergence issue

If the screen is out of focus you probably need to adjust the focus on the focus block it is usually located behind the front grill, there are 6 adjustment screws on this block, leave the screen controls along just adjust the red, green, and blue focus screws. When converging a set everything is converged to the green, the blue and red are suppose to come to the green.

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Sony, tv comes on color fine, then turns red

I had the same problem with my TV, but the hue was blue. I was told that not only did I have to replace the picture tube that wasn't staying on, but I would have to replace them all because they would not mix properly. After much investigation, I found that there is an adjustment for a variable power supply to each tube that can brighten and lighten each tube. I adjusted the RED pot and my picture color issue was resolved! To access this adjustment you must remove the front panel on the TV. At the bottom corners there are two small screw covers that you must remove. Then un-screw the screws under the covers. Then pull the front panel off of the TV, (it hooks under the top near the screen so it will swing out from the bottom). Now remove the wooden panel in the center, (four screws). The pot adjustments are at the bottom of the TV. They are marked for Red, Blue, and Green. They are extremely sensitive, don't turn them much! If you over adjust you will get red, green, or blue lines on your screen. Adjust back down to remove these, (this is also the remedy for removing these lines that can appear over time). Good Luck and God Bless!

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Green screen with red and blue wavy lines

This is "NOT" meant as "expert" this is not my area...HOWEVER...I see no one has answered this yet...AND I got some good help from here a year or so ago that worked for me!

When I had a similar "green screen" problem with my SONY projection tv...the guy helped me by having me make "MINOR" adjustments to the red/blue/green etc knobs behind the panel. These were three small black plastic pieces and needed less than a 1/16 of an inch adjustment...try adjusting one at a time and giving it few seconds after each adjustment. It worked for least for a while (till my wife gave it away to a friend because it was "too big"...ah! women!!! LOL)...hope this helps. (NON-expert help!)

Jan 11, 2009 | Projection Televisions

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I just replaced the lamp in my sony wega # kf50w620. and now the screen has double images that are red and green. i cleaned the mirrors with a micro fiber cloth like the experts on fixya told me to. also...

If you pulled the miniature LCD assembly out it is possible you may have allpied too much pressure on 1 of the 3 screens, and now needs to be realigned..also the squares could be from not reinserting the ribbon cables all the way back in the connectors on the board...

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KP-51HW40 Sony 51" Fades to blue screen

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go In service convergence mode and try to adjust red and green if you cant then it's convergance amp ic's
if you can adjust them so they align up try doing a touch fous after that,.

Dec 16, 2007 | Toshiba 42H81 42" Rear Projection...

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TV Problem with shutting off by itself

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1 Answer

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Hello, I have the same problem and was told that I needed a new convergance chip. They told me who deals in the problems where I live, (TV Repairman) It will cost me 300 for a six year chip and 350 for a life time chip! I was told by the repairman that these chip only last up to 6 years if they are not lifetime. I see alot of this same problem going on right now. These tv were manufactured in 2001, but no one was ever told that these chip would need to be replaced in so few years after spending all that money on the TV. Pasonic would not tell me the price of the chip nor how to get one,were very unwilling to help with the problem other than telling me who do go to locally, so you would have to go thru a tv service where you are.

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