I have a big screen tv and little tiny white specks are starting to come behind the screen. What is causing this?

You may have bad pixels. What type of TV is it?

I’m happy to assist further over the phone at https://www.6ya.com/expert/jason_ee8f979baffc115f

As you probably know, your DLP (Digital Light Processing) TV works by projecting Red, Blue and Green light from three LEDs or a color wheel depending on your model, onto the DLP chip which contains rows of thousands of tiny mirrors. These mirrors reflect the colored light through some lenses and other fixed mirrors and onto the back side of the big frosted plastic screen on the front of your TV cabinet. In the neutral position, these little mirrors don't reflect any light onto the back of the screen. If they flex into a certain position they will reflect any light from the three LEDS shining on them. What color depends on which LEDS are on at that moment. Each one of the mirrors is roughly equivalent to a pixel.

Any mechanical thing will eventually fail and if any of these mirrors fails in the OFF position, then no light will be projected to that mirror's target on the big screen. You are not likely to notice one "pixel" on your screen being dark though. However, if any of the mirrors fail stuck in the in the ON position they will continuously reflect all three LEDs light to that mirror's target on the big screen. This little white dot is noticeable and your attention will constantly be drawn to that stuck mirror's white spot. Once one mirror fails it is only a short time before more and more mirrors stick in the ON position and you see dozens then hundreds of white specs. It's VERY annoying.

Fortunately, if you are fairly DYI handy, it's not a big job to install a new DLP chip (or LEDs for that matter) into your DLP rear projection TV. Do a BING search on the internet for the make/model of your TV and something like "how to change the DLP chip" in that make and model. There are plenty of YouTube videos on line that make the procedure very clear. If after watching the video you don't understand the procedure, that's an indication that you shouldn't attempt it. I've replaced two LEDs and the DLP chip on my Samsung 65" TV. That might seem like a bad thing but if you consider that the TV was 7 years old at the time and these seem to be the only parts that fail, it was worth it to more or less make the TV like new again. When you search for the parts, watch out for sellers with low part price but ridiculously high shipping cost. I found that Sears.com had the best price and shipping times for these parts.

Your DMD chip or DMD driver need to be checked. The most likely it is DMD. If your projector is new with one year warranty, send it to the company for repairs. They will replace it at no cost.

sonsunny

Does the sound crackle and pop as well?
Hope this helps
TV_Doctor

White dots on a DLP mean that some of the tiny mirrors on the DMD board have failed and are stuck in the on posisiton and always reflecting the white light from the lamp. The DMD on this model is not available sepratley so the complete light engine needs to be replaced. The part number for the light engine is 75006693.

What is your make and model number ? It will be printed on back of TV? White Specks-spots means you have a bad Light Engine. Call Encompass Parts
Give them your model number they will tell Price.
1-800-638-3328

sorry to say you,ll need a new lcd screen
big bucks

y sustain board needs adjusting or replacing

It needs a new FLY BACK transformer. That is what you are looking at. The origionals are not made for the set any longer but insist on having a generic on installed by a local TV shop. I just put one into a RCA 31" and it works nice. Don't throw away the TV. Get it fixed. MAKE SURE YOU INSIST THEY USE THE GENERIC ONE! THEY DO WORK!

Possible arcing CRT or possible arcing IHVT part # 239111.