Bought a new BenQ W600+ 5 or so years ago. Never saw a lamp hour warning but it started failing to start with a temp error -- occasionally trying to power up again would be sufficient but before long the lamp would just make a few feeble attempts to light and fail. Occasionally lamp indicator would show red so I figured it needed a new one.
Replaced the lamp assembly with a brand new one from BenQ. No luck but could almost get to the 'Searching for source...' screen.
Fans, vents weren't
Did further disassembly so could get better access to the heatsink, fans, blower for airdusting. Still no luck and probably damaged colorwheel / DMD chip in the process because now there seems to be more flickering and weird specular highlights.
This video shows the state of it now:
Any ideas please? I am guessing something is gone on the mainboard. BenQ are being very unyielding with technical information and the manual says status indicators power=off temp=green lamp=orange just indicates a "system event".