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Your TV is DLP projection TV. DLP is Digital Light Processing. Digitally processed light coming out of DMD (Digital Micro mirror Device) is projected on the TV screen. This DMD is made of thousands of tiny mirrors & the size is about 0.7 inch. These mirrors are fixed with tiny hinges for its movement. They reflect light as per processed signal. DLP is invented by Texas Instruments. When there are dots on the screen, that means the tiny mirrors representing the dots are stuck in its position. If the dots are few & the viewing is bearable, just leave as it is. If the dots are more than bearable then you will have replace the DMD chip which is quite costly.
Hello - the dots could also be on the inner side of the lens , have you tried cleaning both sides.
I had a similar problem once while shooting waves and tiny droplets of salt water were hitting the camera.
Only damp soft tissues on the outside of the lens, any thing on the inside of the lens is a shop job. Ray
I noticed you have a DLP projector. I have a Optoma EzPro 756 which is also a DLP projector.
I notice white "blobs" on the screen when there is a black screen. It is caused by dust getting into the optical block not the lense. If you are comfortable with opening up the projector, you could gently blow out the optical area with compressed air, GENTLY so you don't dislodge any components, and see if that helps. I seems to be a common problem with DLP projectors a few years old. If there are sharp focused dots on the screen then most likely, it could be some pixels starting to go bad like dead pixels on a computer screen. That problem is pretty much irreversible.
white dot is from a failure in the dlp chip. it controls 1000s of tiny mirrors which help make up your pix, when the mirrors get stuck a white dot appears. over time more will pop up. Probably in the $300-$500 range to have someone repair.
the reason this is happening and the problem is getting worst is because the DMD board is starting to go bad some of the micro mirrors are getting stuck on the on or off position and the problem is only going to get worst if you want to fix this problem you need to replace the light engine here is a link that will teach you about this projection works
If these are single pixels on the LCD screen, they are normal. From pg. 8 of the user's guide:
"The LCD monitor is manufactured using extremely high-precision technology so over 99.99% of the pixels are operational for effective use. However, there may be some tiny black points and/or bright points (white, red, blue or green in color) that constantly appear on the LCD monitor. These points are normal in the manufacturing process and do not affect the images in any way. "
This may also be helpful.
"images may trail across the LCD monitor in a cold location. This is not a malfunction. When turning on the camera in a cold location, the LCD monitor may become temporarily dark. "
Well i really do not know what that is but i do have a thought it could be a bad connector and if you want i have the same tv for sale for $300 shipped just for parts the problem with my pt501 was the screen turned colors but the lamp is in excellent shape and so is the lcos screen the ownly thing that does not work is the main board (ciruit board) i will send you the hole thing for just 300$ shipped if you'd like email me back email@example.com
Typically this is an indication of dirt in the optical path. Try blowing out the area using compressed air. Also, make sure that the lens is clean. Use a cloth and solution made specifically for cleaning lenses.