Please help -- SCSI stupidity on my part (?)

[Matt_H]

I've never used a VLab Motion before, but something tells me that you shouldn't be hooking it up to the SCSI chain, but rather giving it its own chain. That's how other video cards work, at least.

It doesn't seem like it would make sense to attach it to the existing chain since it should already be able to access the existing chain through the Zorro interface.

One last point: are you absolutely certain that it's a SCSI port on the card? There are a few cards from other manufacturers (DPS) that have 50pin headers that are not SCSI ports.

[Matt_H]

Tell us more about the machine: Kickstart, accelerator, other cards, etc.

You should really get a set of Workbench disks. Any dealer can fix you up.

[Matt_H]

If I'm reading your posts right, you removed the VLab and everything was fine, then tinkered with the SCSI a bit and ended up in your current no-boot/no-fan situation. Is that accurate?

But the machine does boot from floppy with no 2091 plugged in?

[Matt_H]

So now with nothing installed things are going up and down? That points to a PSU issue.

[Matt_H]

The timing is strange, but things gotta fail sometime. The PSU to my 1200 was working beautifully one day and  then started doing things similar to yours the next.

I'm not going to say with absolute certainty that it's the PSU, but it's probably one of the easier things to find and replace. At least try to eliminate it as a variable. And if it's not the PSU, then you've got a spare. :-)