Unifi 35 & Smartboard 680 intermittently switching off
Unifi 35 projector (SB680) is intermittently switching off approx 3 times a day. Sometimes it will flicker first before switching off. Teacher has just reported that it has happened again, so had a look and the screen is blank, lamp is lit but giving a dull light, power switch on front of screen flashing red and the usb connection light flashing green. Only way I can get it back is to power off/on and it works again.
I've replaced the lamp, cleaned the vents around the lamp and at the top of the unit (wall end plate), but problem persists. Anyone know whats causing this?