Question: G4 MDD Will Not Boot
All this started about a week ago. I was using a G4 MDD DP 1.42GHz FW800. I had 2 SSD's, 2 platter drives and 2 optical drives. Everything was fine, then suddenly the computer could not see the SSD's. But it still saw the platter drives. I was able to boot off these drives, but not the SSD's. Slowly the Platter drives gave out and the opticals died at the same time. I tried everything I could find on the net and nothing worked. I was doing some maintenance to the PSU when I accidentally dropped it on top of the CPU heat sink. The PSU was not plugged in, but when it touched the heat sink there was a loud bang and I saw an arch. I was convinced the PSU ruined the motherboard and CPUs.
I got replacement boards off of ebay. After I installed them nothing worked. When I pressed the I/O button it would glow then go out. Fans ran but no video. Put the original CPU back in but got a blue screen with a flashing ? on a folder. It looked just like OS 9 but it wasn't booting. Put everything back the way it was. still got the flashing ? but no power light and no chime. I gave up.
Got another G4 MDD 1.25GHz FW400. Figured I can't go wrong. Mac came with a clean drive. Installed Tiger, did a Migration. Everything worked except the boot drive didn't come out the way I had thought. The Mac still worked the way it was. I wasn't entirely happy so I grabbed my old setup from the other MDD installed it all. I figured I'll do a system restore. Now I'm back to square one. The I/O button won't stay on, the 120mm fan roars and there's no video. I put everything back the way it was originally. Still no good! Somebody tell me what to do.
PowerMac, Mac OS X (10.4.11), G4 MDD 1.25GHz FW400