G4 MDD startup issue/blank screen

[mac-man6]

I'm fixing a G4 MDD Powermac and it has this annoying problem. This computer will chime on startup and will make some hard drive noises it will not display any video on the DVI or ADC video ports. It's pretty sweet (Dual 1.25 ghz and 2gb ram) but this problem has me stumped.

I've reset the PMU, disconnected the IDE drives but can't get the computer to double chime with a PRAM reset.

Any suggestions?

 

[Christopher]

My gigabit does this. Make sure your video card is fully seated, it sometimes comes loosened on one end or the other when you open the case a few times.

 

[mac-man6]

It's not looking good, she's dead as a door nail now. I've swapped the batteries, put in PCI video card, disconnected every IDE cable, started swapping ram chips. I don't what's next for this brave dualie.

I've pulled the HD just to see what's on it and it's an 80gb IBM Deskstar. I know the moniker Deathstar, but when did they stop sucking?