Being G3 stopped booting after reseating PCI card

[lukewood]

Hi,

I have been trying to get my old beige G3 Mac working. It was completely dead as it hadn't been switch on since 2004. I replaced the power with an ATX supply, replacing the jumper etc. I managed to get it to chime but then I got a car crash sound. I removed one of the RAM sticks out of it so it was booting normally. I also replaced the PRAM battery.

I have a Korg 1212 audio card plugged in the PCI slot. The Mac and Logic Audio wasn't recognising it and recommended that I reseat the PCI card.

I touched the power supply to discharge static and removed the power cable. I carefully removed the PCI card and reseated it.

The Mac is now won't start. Both power buttons respond, making the three lights on the keyboard light up, the floppy makes a sound and there is some noise like it is going to start. After a second, it is dead. If I hold the power button down, it does this on a loop.

I tried pressing a little grey button as some people suggested to no avail. I rather suspect it is the logic board but I am wondering if anyone has any ideas?

Any advice would be greatly appreciated.

Kind regards,

Luke

 

[r34per]

Do you have another power supply you could try? Also I'd try powering it on with no pci cards inserted at all and see if it powers on then.

 

[DeltaMac]

Disconnect the internal hard drive -- if you have more than one internal drive, disconnect all of them, then power ON.
This is just a test to see if the Mac does something different, such as showing the flashing question mark (which it should). Connect each hard drive, one at a time, then try power again. Any changes?

 

[mustagcoupe]

I have had issues with the pins in the processor socket not making good contact and making the computer power on but do nothing else as the processor isnt making the proper contact. Pulling the pci card could have flexed the board enough to cause a contact issue. Try removing the heatsink and working the lever on the socket back and forth a few times then put the heatsink back on and see if that helps.

 

[lukewood]

Thanks everyone for your suggestions. I will try them all and report back.

 

[lukewood]

Sadly nothing worked. I guess it wasn't meant to be. Thanks again for all your input.