HD SCSI cables

[X-ray]

@ Nex

Don't you mean the A3000?
I changed the battery in my a4000T (was not working for 2 years) and I didn't have to do anything. I think you mean the A3000, mate.

[X-ray]

@ Primetime

You usually can't put a SCSI ribbon the wrong way on the device, but just in case: the stripe must be closest to the power connector on the device.
As for whether it is the wrong way around on the controller: there should be a small '1' on the circuitboard next to that connector. That is the side the stripe goes.

[X-ray]

@ Primetime

Also, you may have done what I did (a real smart move): I plugged the SCSI ribbon cable onto the SCSI header on the controller so that two pins were not engaged by the ribbon connector. Edit: a variation on this is to miss all 25 of the lower pins and not notice

I know, I know, it was stupid but not only did I do it, but it took me a while to notice what I had done. I did the same thing trying to connect an IDE cable to the IDE connector by feel, because I didn't want to take the drive chassis out.