Amiga 3000 will not see HDD

[simon_m74]

one of my A3000`s will not see ANY hard drive.

I have tried 2x spinners, 1x SCSI2SD and 2 different Scsi cables - all of which work in another A3K.

I assumed the issue to be the Scsi WD chip and/or the Super DMAC.
Both swapped with the other A3K - both work in that miggy, whereas the `working` chips, dont help the problem.

So its not the HDD, cables, Scsi WD IC, Super SDMAC - or PSU (same one used on both Amigas.

A friend suggested that, as its missing the termination resistors, it may need them...but the one that works - does not have them either, so I`m not sure.

Any ideas?

[alexh]

Did it ever work? If not could it be battery damage? I think the battery is no-where near the SCSI.

How about batmem settings? I think there are some SCSI settings there... mainly how long to wait after power on before checking the disk.

https://aminet.net/package/util/sys/SetBatt1_0

Have you changed the SCSI number of the drive?

[Snoopy1234]

NVRAM settings return to default after battery change/fail. Battmem is not needed unless you need to delay drive access or other tuning options.

Termination on mobo and drive - or - drive and external port is generally required.

[simon_m74]

AlexH
I think this one used to work - all the faults my A3K`s, I dont remember this one at all.

Scsi numbers...None have been changed, as they are all as is from the VR machines that the Amigas came from. - None of the other Amigas have this issue. (well the working ones)

This is not a SW/WB issue at all.
If I plug in a HDD and boot, it sits on kickstart screen, waiting for a floppy to be inserted.
If I load WB from floppy - still not HDD can be seen.

Snoopy1234
I dont think its termination.
The Spinners and SCSI2SD all work fine without changing anything in another A3k.
Neither A3k have the termination resistors