The TV has white dots on the screen when you turn it on. It also has a few black dots. They are all fairly small dots, but a lot of them.

White spots or dots showing up on your TV's screen could be the result of a bad or damaged processor or due to some overheating occurring the summer time or cold weather temperatures during the winter time. TVs can be affected by electricity surges or spikes as electricity supplies vary throughout the year. Or power outages and brown outs and black out can also cause spots to be on the TV screen too.

projection tvs can display white dots from the dust that is on the reflector mirror your lamp shines the picture on before it is reflected onto the front screen of your tv, one must be very careful when cleaning this, may be worth a service man doing it for you

Ensure your input device is not causing this, by changing the TV input to a different video device. Then, look for any loose contacts on the RC cable or input cable. If nothing works, better refer it to a qualified service technician.

It's a connection inside the TV that's faulty. It could be as simple as reseating the ribbon cables that connect the control board to the glass display. Or it could be that the fault is on the board and needs to be replaced. The fact that the problem comes and goes should tell you it's fixable.

well u have stopped ur movies(dvds) to many times and the dots are burn marks on ur screens
if u read ur manual it will tell u NOT to leave a still picture on for to long as it will damage ur screen
i assume u have a PLASMA TELEVISION
if not... sorry cant help u

replace the lamp then the color wheel

The only thing you can try is to adjust the tiny control on the Y board, if you want to try do this. Open the set , set it up so you can watch it with the back off. now looking at the back on the left side you will see a circuit board larger connected to a smalled one or two that go to the screen edge . on the larger board look for a few small controls, mark their positions with a dark sharpy then turn each a little while looking at the dots to see if one makes them better or worse. If one control effects the dots try to center it for the least amount of dots, if no effect is observed when a control is turned return it the original position that you mark before starting. if the dots do not clear either the Y board is bad or the whole scfreen is defective.
gd lk
Eric

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

you need to replace a cople of the opticoupers most likely, if you want to repair this and save yourself a lot of dough, contact me at techman32k-at-yahoo dot com
Larry Dillon

This is what is referred to as a Maldischarge problem. It seems to be a fairly common problem on plasma displays.

This is caused by a few things but mostly it's either your Y-Sustain or your Z-Sustain boards and usually it's your -VY, your VScan and your ZBias voltages. 

If this is covered under warranty just get a tech to fix it. If not, let me know and I can give you some good instructions on how to try to correct this yourself, however it does involve opening up the TV, use of a digital multimeter & osciloscope as well as a small phillips screwdriver, some time, patience and you do run the risk of making it much, much worse if you're not careful. 

your dmd chip is defect this a good job you must tack emgine apart calculate atleast 200 dollars