Amiga 2000 w/ GVP Impact II 030 doesn't always boot

I recently acquired an Amiga 2000 Rev 4.4 w/WB 3.1 and ECS. It came with a GVP Impact II 030 40mhz accelerator board. The machine has an unknown history but judging by the amount of dust inside, it was very well used...

The issue is with the accelerator installed, the machine doesn't always boot. Power it on and it usually just sits there at the initial dark gray screen. Occasionally I'll get a Guru Meditation.

If I hit control-amiga-amiga to reboot, after one or two of those it will boot normally. I can tell it's going to boot properly when the hard drive LED lights up while it scans the SCSI bus.

Power cycling it will also get it to boot after one or two tries... Initially I thought it was a badly seated CPU card but that's when I found rebooting with the keyboard shortcut would make it work too.

Once running, the machine is 100% stable, working perfectly. Also, if I reboot the machine once it has booted, it always reboots fine. I did a full memory test and that checks out. Like I said, once booted, it works perfectly.

Also, with the card removed, the machine boots 100% of the time even after sitting overnight.

Any thoughts on what might be the issue here?

PS: I removed the clock battery which luckily hadn't yet corroded anything.

[solidcore]

Perhaps insufficient power to board due to issue at PSU/Amiga.

I'd check the power rail capacitors on the Amiga/PSU rather than the board itself. Look for leaky/dry legs+pads and bulging caps, any green/blue on the joints/pins in the local area of the caps is a bad sign of leakage and needs to be resolved immediately. Try another PSU. Try another Amiga, if you can.

[ModMumpitz]

Hi,

Have you checked, the rams and their timings?

[nogginthenog]

Could it be flaky SCSI termination? Does it do this with no drive attached?