I HAVE A SAMSUNG DLP HLT5075SX/XAA AND IT STARS TO GET BRIGHTS LITLE DOT ALL OVER THE SCREEN WHAT IS THAT IST A PART THAT I NEED TO REPLACE?

You can get the service manual for $7.99 here:

https://www.completeservicemanuals.com/electronics/samsung/dlp-projection-television/hlt5075sx/xaa-service-manual.html

You have a Bad Colr Wheel PN# BP96-01854A.
Encompass has it for $109.40 1-800-638-3328
Samsung Parts 1-800-627-4368

If you focus the image on a screen up close to the projector and notice small rectangular black and white spots, then you have pixel failures.

White dots that increase in number as time goes by indicates that the DLP chip needs to be replaced. Samsung use to cover this problem under their "white dot" warranty. You can call 1-800-samsung to see if they will repair it. If not, they can give you the closest service center. I would not attempt this repair unless you are a trained tech.

This is a known issue with Samsung DLP sets. Here's a link to the solution:

http://forums.cnet.com/5208-13973_102-0.html?messageID=3162774&tag=emfrnd#3162774

light engine is the most likely cause

Manual says you need to replace the lamp: When do I need to replace it?
• It should be replaced when the screen becomes darker, less clear or when all three LEDs on the front (STAND BY/TEMP, LAMP, and
TIMER) are flashing
imgadgetman

You can purchase color wheel of Samsung HLT5075SX from Part Store and I would recommend to have qualified TV tech for installation. it is not advised to novice to get involve in such kind of repair that can damage TV.

Still you want to repair it by yourself then download service manual copy of same TV from HERE for small fee that has proper info.

That is probely the smell of the new lamp. If the odor persist and gets worse then remove the lamp and inspect it and the inside of the tv.

You will have to pull out the light engine. That will consist of 4 or more screws and disconnecting some plugs. The the whole unit slides out where you can get to the fan housing.

Unless you're mechanically inclined, you should not try it as you could damage the assembly.

I don't know the part number off hand and some of those have newer part numbers as replacement for the original. Just do a google search to come up with a part number.