Small white spots on screen.
Bad optical light engine, most expensive part in set
SOURCE: Mitsubishi dlp tv WD65733 has white spots, like
If you get White or black dots all over the screen (DMD symptom)
If you get a pixilated picture (DMD Board)
SOURCE: bright white spots on mitsubishi wd-73833 I just
Bright white spots on mitsubishi wd-73833 because DMD.
below is example for worst bright dots. If your case like pic below, change DMD.
SOURCE: My mitsubishi 65-inch dlp tv
It's either mirror hinge fatigue or dust on the inside.
Mirror hinge fatigue can be fixed by putting a solid color picture (white or gray works best from what I understand) on the display and letting it sit for 20 minutes.
If it's dust, someone is going to have to go in there and clean it out.
Also could be a defective micromirror device.
Try the first suggestion and if it doesn't work, you're going to need a technician to take a look at it.
SOURCE: White spots on screen Need DMD
This is something of an urban myth....The "DMD chip" is actually the LCD display IC for the set; yes I have seen some listed on EBAY---still a myth----they are replaced (when a light engine is rebuilt in a space age lab or environment) under exacting conditions----if positioned a micron off in any direction picture will be tilted in some way---this is also not like changing spark plugs in a car, if you have a optical engine issue like spots etc, either get a rebuilt engine from Mitsubishi or buy a new set.
They usually require some parts for old engine (mounting brackets etc) be installed on new or rebuilt engine.
I did see the "chip" for another model listed on ebay today.(100.00 PLUS)
I understand the engine is expensive, I replaced a lot of them when the sets were in warranty---more Mitsubishi than any other brand with Samsung a distant second.
I am sure Mitsubishi does not offer the part for sale--they want to sell a tested rebuilt engine only.
I wish you luck but have little hope you will find a "part" other than the whole engine.
SD TECH
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.
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