White dots coming up all over screen
Bad DMD chip
call Mitsubishi, they will send one to a servicer at no cost, you will only pay for labor
SOURCE: white dots on my mitsubishi WD-73734 tv screen
Your tv is a DLP projection one. In it the image is generated by projecting light on a chip that is covered in tiny mirrors that reflect more or less the light towards the screen. In your case some of those tiny mirrors are no longer controlled - they are immobile and reflect fully the light so you get a white spot on the screen.
The DMD chip that holds the mirrors is dying and you will have to replace it. This is the only place i could find that claims to have it on stock. You can also go thru Ebay, in there you will find second-hand ones extracted from defective tv's.
It's installation is strictly a job for a person with great tv repair experience - too many thins can go wrong in there if the job is not done properly.
SOURCE: white dots on tv screen
The white dots that come and go could be what is called ignition noise. Caused by something in your residence or on the power line to your living area. You will have to do some tracking. Take a portable radio and tune it to the 550mhz, you will hear a crackle or buzz, tune to the loudest that the buzz/crackle can be heard. Walk around to see were the noise gets to be the loudest. If it gets weaker you are moving away from the source. The source could be a dimmer switch for lighting, or a loose connection on a receptcle, or in the panel box that supplies the residence. Worst case it could be entering from outside source. I have tracked ignition noise as far as two houses away that had a bad butter control on a refrigerator that was on the same power line that supplied the neighbor hood. There are so many things this day and age that could be causing your dots. Yours come and go, so you will have to track it when it is acually seen on your tv. Sounds like something on a timer like refrigerator, Furnace, etc.
SOURCE: I have White and black
I developed white spots on the screen of my Mitsubishi WD-57734 in increasing numbers over days and weeks. I called a repair service who quoted me $1500 to replace the light engine. He suggested I call Mitsubishi Customer relations at 800-332-2119 option 5 which i did. To make a long story short after several conversations with them they agreed to replace the part for free if I picked up the labor (Would have been less conversations if I had the original purchase receipt). Instead of $1500 I paid $250. The tv was only 3.5 years old. Perseverance paid off.
SOURCE: How do I repair white dots/dead pixels on my 3
You have a bad light engine. It is available at encompassparts.com for retail price of $749.10. Call 1-800-638-3328. Consumer not in business could be higher price.
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