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PramitP
PramitP, Technician
Category: TV
Satisfied Customers: 3024
Experience:  Diploma in Electrical and Electronics from AVV University
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My 50 Inch Plasma TV has small white spots on the screen-more

Resolved Question:

My 50 Inch Plasma TV has small white spots on the screen-more daily.Started about 4 weeks ago-its 4 years old.
Submitted: 2 years ago.
Category: TV
Expert:  PramitP replied 2 years ago.
Hello,

Sorry to hear about the problem.

What is the model no. of the set?

Regards,
Pramit
Customer: replied 2 years ago.
Sorry don't have the model number here-When I get home I might be able to get it-however I'm installing a new computer at home and I can't get the new mouse to activate so I'm dealing with that at home and unless I get that going I'll have to wait until I get back to the office to provide the answer. Thurs at 5-6pm.
Expert:  PramitP replied 2 years ago.
Alright, take your time. Also, check if the dots appear while using all the inputs(HDMI, composite, component etc.)
Customer: replied 2 years ago.
Do you mean Netflex ? That's all the inputs I can think of. Or dvds, too.
Expert:  PramitP replied 2 years ago.
I mean the ports at the back of your set. See an example below.
graphic
Y Pb Pr are component inputs. Yellow is for composite. The one that looks similar to USB port of a computer is HDMI. Pair of white and red are for audio.
You can connect whatever(DVD player/Blu-Ray player/PS3/X-Box/Wii etc) you want and check.
In case you don't remember the model no., can you confirm if it is a Plasma TV or a DLP TV? Does it have a protruding back like old TVs?
Customer: replied 2 years ago.
It's a DLP Ultra Slim No big back
Expert:  PramitP replied 2 years ago.
Seems like the TV has a bad DMD. It is known as Digital Micromirror Device and it is inside the light engine. In 90% cases with similar symptoms, the DMD is bad. I have seen this problem on Mitsubishi and many other brands of DLP TVs, as well. Most of the time the entire light engine is either replaced or worked on.

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 in the "On" position. These mirrors get jammed and hence this problem.


You can contact Samsung Support for the same. You have to call 1.800.726.7864 and request a service. Since it is only 4 years old, they might consider it as a premature failure of light engine and give you a discount, but you will have to persuade for that. Usually it costs around $800 to fix the problem. Hope it helps. If you have any other queries then I would be glad to assist you further.

 

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PramitP, Technician
Category: TV
Satisfied Customers: 3024
Experience: Diploma in Electrical and Electronics from AVV University
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