Commodore A4000T troubleshooting

[smerf]

Today I picked up a Commodore Amiga 4000T (pictures) - it was bought as untested/not working, since we couldn't get it up and running at the seller.

After some troubleshooting (replacing processor, mem and disabling all cards), I found out that it only  works if I kill the IDE disc (have tried 2 HDs).

The machine is stripped down - so only Floppy and SCSI CD rom is connected to the drive module. And the IDE disc is connected to the IDE pins on the mobo.

But it wont boot with the IDE attached - any known issues (have consulted the manual)

Hi,

Hate to tell you this but it sounds like a weak power supply breaking down under load, but if you have another hard drive try that first, doesn't have to be super huge, just something to hook up that you know runs well in another computer. If it still blanks out then you know your power supply can be breaking down under load.

smerf

[smerf]

Hi again,

If you can try hooking up a cdrom instead of hard drive, if it still blanks out, then disconnect the cdrom, and see if it runs again. In other words try to load down the power supply and see what happens. If you have other things in there that you can disconnect like 64 megs of memory, try reducing it down to say 8 megs, or if you have a graphics card, try disconnecting. In other words keep the hard drive in but disconnect other things to lighten the load, this will show if you are overloading the Power supply or if it is breaking down under load.

smerf