My Mitsubishi rear project 43" stopped displaying picture. I had a repair guy come, he said the coolant seals on the bulbs had broken and it leaked coolant all over the board. He fixed it for abour $400.
Since I got it back, it now powers off from time to time by itself. Sometimes it will only stay on for a second, other times I can watch for 2 hours and not have it happen once. I had the repairman come back, and he was here for over a half hour and the darn thing didn't turn itself off once. He checked connections and everything but did not see an obvious problem. Of course, he had barely pulled out of my driveway when it did it about 20 times in a row.
Funny thing tonight, I noticed that when watching a section of a show where the screen turns almost totally bright yellow, it turns off. I have this show Tivo'd and can replay the exact spot, and each time it turns off. I can even pause it and freeze frame forward, and when it gets to the bright yellow frame, the TV powers off.
Any ideas what this could be related to?
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Re: TV turns off when bright colors displayed
Yes your fix is in the threads here, I have answered many of the question on Mits as of other sets, you have a problem with this set Shutdown at bright scenes, it is a known problem and the answer lies here on threads, just search. This keeps from having to keep repeating the same answer. Thanks, hope this helps!
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Spots in the picture are caused by optical engine problems. Mitsubishi has no procedure to repair the engine. The only option is to get a rebuilt or original from Mitsubishi. Your looking at a repair cost of about $700 - tough call since this tv has had sooooo many problems.
This is a DLP They have issues with the color wheel, the winding sound could be from this color wheel. If it stops spinning it will cause the tv to shut down. DLP is a mechanical display process. If you are handy and understand electronics you could replace this yourself. If not i would let a tech handle it.
I assume you purchased the tv in the current condition you are describing. Philips are notorious for having cloudy glyconol coolant. The coolant is situated in a chamber between the light tubes and the lenses and is required in order to keep the tubes running cool or they would otherwise crack from the excessive heat from the light tubes. The coolant normally becomes corrupted in the blue tube first, with the red and green tubes following closely behind it. The Video that is able to project through the cloudy coolant causes a picture that is washed out, fuzzy, and can even cause rainbowy colors depending on how many chambers are cloudy.
If you want further proof that the glyconol is corrupted, you can have someone remove the rear cover and take off the lenses from the light tubes so you can see directly into the coolant chambers to determine which ones are cloudy. Replacing the coolant is an involved process. You should attempt to return the tv to the sales person for a full refund if possible and explain the tv is not okay as he said.
Tint would be the control that will control the color balance, but this sounds like it may be deeper then that. Turn your color all the way down so that you have a black and whit picture. If the picture is still yellow then you have a problem with the blue picture tube.
Good Day, cantseewhat;
It sounds like your TV has a problem. It could be and most likely be CRT Coolant on the circuit boards. If you handy, then clean PCB's with acetone on areas which fluid appear. If not handy call aN Authorized Sevice Center and have them give you a written estimate B4 repairs. Cost $450.00 to 650.00 depending on your location. Good Luck, big IRISH.