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Steve
Steve, Technician
Category: TV
Satisfied Customers: 1098
Experience:  Over 40 years experience ISCET Certified in Biomedical & Consumer Electronics
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i have a mitsubishi DLP tv and i started getting white spots

Resolved Question:

i have a mitsubishi DLP tv and i started getting white spots on screen (white stars) can you help me please
Submitted: 4 years ago.
Category: TV
Expert:  Steve replied 4 years ago.
Hello, may I ask the purchase date (or close guess) of the TV?

Are these dots approximately 1/16" each, about the size of a pencil lead?

 

Are the dots consistently in the same place, and seen on other inputs and the TV menu?

 

Have there been any previous repairs?

Customer: replied 4 years ago.
purchase date 11/23/07 no previous repairs and yes the dots are about the size of pencil lead the dots are from the middle of the screen and the right side no dots on the left
Expert:  Steve replied 4 years ago.
Hi, these dots do not move, correct? They are always in the same place?

No previous repairs?
Customer: replied 4 years ago.

replace lamp about 4 months ago the dots are in the same place and do not move some blink and i notice more every other day

Expert:  Steve replied 4 years ago.
Okay, thank you. Unfortunately, I do not have good news; but, all I can do is be honest... The problem you are seeing is caused by "stuck" mirrors on the DMD (digital micromirror device) in the optical engine. I have seen this problem on Mitsubishi and many other brands of DLP TVs, as well.

Each spot (pixel) that you view in the picture is made by a single mirror moving back and forth on the DMD. In total, there are over a million of these tiny mirrors, and the white spots you see are those mirrors that have stuck "On." I borrowed a photo from the internet to help show what happens on the DMD:

graphic

To correct this problem the optical engine in the TV must be replaced. However, the repair cost is quite high: The Mitsubishi replacement retails for $1014.10, plus shipping, tax, and labor. Usually labor is in the $200-300 range (in my area). If needed, the part number for the optical engine is: 938P075010. You may be able to find less expensive optical engines on the internet, but these engines could be a gamble, so please use caution if shopping for a lower price.


I recommend contacting Mitsubishi Consumer Relations at(NNN) NNN-NNNNto ask (emphatically insist) that they cover the cost of the repair. They may very well supply the optical engine at no charge, with you paying the labor; but, it doesn't hurt to keep trying for the labor cost, too. Please remember you paid a premium price for a premium brand TV that has lasted less than three years(!). You may need to be insistent, and make several calls, but Mitsubishi is well known for being very helpful (hint).

Important: Usually Mitsubishi requires one of their authorized servicers to check the TV on-site first, before they will offer a concession (even though they will already know exactly what is wrong with it). It is best to have an estimate of the repair from the technician before you call Mitsubishi.

If needed, your nearest authorized Mitsubishi servicer can be found by entering your information on this page:

http://direct.where2getit.com/cwc/apps/w2gi.php?template=search_new&client=mitsuservicer#?mid=174138

I know this is not good news, but it is the truth. Please let me know if you have any questions, or if I can help in any way.

Steve, Technician
Category: TV
Satisfied Customers: 1098
Experience: Over 40 years experience ISCET Certified in Biomedical & Consumer Electronics
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