Random white dots on screen

TRY HOOKING THE LAPTOP TO AN EXTERNAL MONITOR IF THE MMONITOR IS OK. THEN ITS THE CABLE CONNECTING THE KEYBOARD TO THE SCREEN. HOPE THIS HELPS. THS HAPPENED TO ME GOOD LUCK

White does suggest (dots) a damaged or bad optical light engine.

Have you spoken to Toshiba? It may be well worth while as their screens normally last a very long time.
Hope you get a result.

u need a new optical block or light engine , this part cost between $400 - $600

that is a connector error needs to be reseated but if it is new return it for an exchange

The random whit dots you are seeing is more than not the DMD or million little mirrors board. The white spots represent some of the mirrors that are sticking in the on position. In that case they are always reflecting white light from the lamp. I don't concider the DMD board a do it yourself repair since on the older DLP set it requires mechanical alignment as well. The best thing to do is contact a techincian and see what they might charge to repair the TV for you. Please take a few moments to rate my answer...Thanks..

Change the Y-sustain & Buffers.

Random dots or pixels failing on a DLP TV will be a bad DMD chip. This is a technician replace item only. The chip runs around 160 dollars list price. The part number will depend on which version the set uses and will be determined by the technician.

Change the crank censer

Replace the phone, it is defective. I have the same phone, never does it. Verizon has a year's warranty.