This will probably not happen with the Pimax 4K, unfortunately, mine blew up, lol.
Smelled something strange like burnt plastic? and the Pimax 4K completely shut off.
Opened it up and it appears the LCD cabling managed to get too hot because the plastic LCD housing straight melted from some obvious intense heat from the cable connection point.
Don't know how it happened but now the screen only shows nothing describable, really.