Just ran into a PB Duo, with an issue I hadn't seen before.

It powers on and chimes, but it shows the grey screen. Never makes it to a mouse cursor, or icons or anything. So i stripped it down to the bare board, removed modem, HDD, and memory expansions, also removed keyboard and mouse. Same thing.

Anyone seen this before? I figure its a hardware failure in the logic board but narrowing it down would be nice. lol.

The one thing I did notice, is the HDD never spins up. So its clearly not getting the ON signal from the SCSI IC.