G3 AIO died after being off for 2 days

[d3jsp]

Was working perfectly. Left it off for 2 days and now it won't boot.

First it chimed, turned on with a completely white screen on the CRT but then won't continue further
Turned it off, restart and still a white screen but now it's off center
Tried a pram reset at boot and now even the crt won't turn on. Same after multiple pram resets and pressing the reset button on the motherboard. It still chimes and all the drives spin up but screen stays black

 

[d3jsp]

Forgot to mention that I pulled out the pram battery 2 days ago but it was working fine before and booted even without the battery

 

[Durosity]

Do you have an external monitor your can attach to the video output to see if it works that way?

 

[d3jsp]

tried it but no video since it chimes but won't actually boot

 

[d3jsp]

do I need a pram battery to boot a G3 AIO?

 

[d3jsp]

Turned out to be the motherboard. I swapped it with a known good G3 beige and it boots!
But so weird that a board would just die like this randomly. Now it's just black screen in the beige too

PRAM reset does absolutely nothing. Not even second bong
Reset hotkey ctrl-option-reset works but just bongs and black screen again.

 

[adespoton]

Well, the motherboard is a lot of parts and traces. Likely one component failed. Based on the sequence of events, it's likely one of the more complex parts that failed slowly.