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Color distortion I have a 73" Mitsu DLP that is about 2.5 years old. I have already replaced the lamp once, about 6 months after I bought it. Recently I have noticed a distortion with the color. There seems to be a LOT of noise on the screen, where backgrounds look almost like a photo negative with pinks surrounding it. Faces look the same way. I have played with the color noise and it doesnt seem to help. I have even tried to decrease the magenta level and it doesnt seem to help. any suggestions? My TV is making a loud buzzing noise when there are graphics on the screen or if there are bright colors. There is also an aura around the offending picture.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: dark picture (HELP)

Open up the back of the set but be very carefull. Notice a large black block with a large red wire that runs up to the picture tube. on one side of that large block where the thick red wire is comming out of are two controls, one should be marked focus or F and one should be marked screen or S. With the set operating normally and not touching anything else, slowly turn the control marked screen or S clockwish till the picture gets bright enough. If you go too bright the set will shut down or you see small thin white lines so back down on the control. then touch up the focus and your good to go. good Luck.

Posted on Mar 20, 2007

jerryg50
  • 1667 Answers

SOURCE: 46" Samsung DLP Lines & Freeze up

This is a possible fault in the power supply, and can be a problem with some decoupler caps on some of the boards. The vertical bars and unstability are usually attributed to having high frequency noise and or clocking pulses crosstalking on to the power distribution lines that run through the boards. This can be switching power supply noise, or cross-talk from clocking pulses.

Another thing that can cause your described fault is unstable clocking between the devices that are reading and writing to the data busses. There are a number of data busses running through the set for the boards to be able to communicate with each other.

The tech will use the process of board swapping to service the set, and then do the adjustments as necessary to make sure the new boards match up.

Yes... DLP sets are fairly expensive to service!

This is my personal opinion. If the set is out of warranty, I would change for a Plasma or LCD set. If you compare the performance of these to ther DLP, the difference is very big. From what I am seeing from a service point of view, the DLP's are lower in reliability.

Jerry G.


Posted on May 06, 2008

  • 13433 Answers

SOURCE: Color Tv

Well im not sure what can be done about it, our tvs also have a little buzz in them, my laptop also has a background buzz very silent one, if I plug my headphones directly into my computer, I get the same buzz from there also, but when I plug my headphones into my lcd screen there is no buzz, there seems to be somekind of a filter or amp which filters the buzz out and the sound is clear.

this is not really a fix, but I feel the buzz is normal, I suppose it could be cleared out by somekind of a filter or amp between the source and the speaker.


Posted on Aug 11, 2008

  • 58 Answers

SOURCE: Samsung DLP TV has lot picture. Makes a Humming sound

That sounds most like the color wheel,
to change that you need to have some skill in electronics, I would recommend to take it to a shop

Posted on Apr 25, 2009

  • 1 Answer

SOURCE: color distortion

I have a 2005 73" dlp . Your light engine is going bad ! soon you will have a pyschadilic light show then total failure. I've replaced 3, Mitsu paid for all of them. But its getting very old.....I'm about to replace a fourth as soon as i can get it scheduled. Don't wait too long to order it . it can take up to 3months to get it.

Posted on Jun 24, 2009

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have a great one ! :)

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