We recently had our TV serviced and they replaced the 3 color chips. Now our picture is far too dark. We can barely see faces in night time scenes. The repairman said it was the quality of the shows; however, the same shows and movies look great on our less expensive, non-HD TVs.
We have tried all of the adjustments an nothing helps. Please advise.
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The tv LED light on the tv front bazel frame face have the word "LAMP" light up or blinking?Yes.The tv projection lamp been inside this tv like 1 1/2 or 2 years already,tv used it everydays like 4 or 5 hrs daily?Yes.Than the tv projection lamp life are over,that why it dim picture tv now must have it tv projection lamp to be replaced.
You can try adjusting the color output. There are two ways to do this: 1) In the service menu (I don't know the codes or parameters...) I will not cover this for lack of info.
2) Via the focus block (Very touchy and difficult to get the mix right again if you get too far off)
If you take off the front cover there should be a access panel. Behind that, there should be a small square black box with 6 screws on it. This is the focus block. (At least this is where most of them are located)
It sounds more like you may need more red in the mix or just less blue and green. There is a screw for each color. Do not mess with the focus screws, just the ones labeled 'SCREEN.'
Barely turn the red up. Use an insulated screwdriver and DO NOT TOUCH the focus block and ESPECIALLY NOT the back of it. Very HIGH VOLTAGE. I found that out the hard way.
Do not turn andy of these up too high or damage may occur and the TV may detect a short and shut off.
I have found that if the three colors are adjusted in a dark room to where the 3 color spots (R/G/B) are just barely visible on the screen at equal levels, there is a pretty good color balance.
The colors seperating is a convergence problem, as far as being dim this may be related but the TV likely needs service adjustments. convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks! See link for more detail http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html
I believe you either have a bad LCD Controller Board or a bad Main Board. The only way to know is to replace one. If it doesn't fix it , replace the other. Or replace both and it should be fixed.
I hope this helps,
It is hooked up to Direct TV. When I change the channel on the TV to another input it looks fine but without a picture.
as you do not see tint in another channel means your color section is ok
it is due to video or luminance section.