Color Classic / LC575 Upgrade / Dead Internal SCSI

[macsonny]

Hi All,

I recently picked up a Color Classic and scored a LC575 motherboard a few weeks later. The CC worked fin with the original motherboard. Installing the LC575 motherboard, the machine booted fine a few times but then for some strange reason the internal SCSI stopped working.

I have swapped the internal drive and are using a BlueSCSI and a SCSI2SD. In all cases it will not boot off the internal drive (when it used to). It will boot fine from external SCSI using SCSI2SD.

Even when swapping the original Color Classic motherboard back the machine will not boot off the internal SCSI device.

Is this likely to be an issue with the internal SCSI cable maybe?

Thanks

macsonny

 

[ESM-NL]

Does the internal BlueSCSI get power from the molex cable or only over the connected SCSI cable?

 

[macsonny]

Does the internal BlueSCSI get power from the molex cable or only over the connected SCSI cable?

Initially it was powered just by the internal SCSI bus. When it stopped working i tried using power from the MOLEX but that didn’t seem to solve the problem.

 

[ESM-NL]

The other things I could think of: is the terminater jumper correctly set on the BlueSCSI and are there maybe SCSI ID conflicting between the internal and external SCSI‘s?

 

[macsonny]

The other things I could think of: is the terminater jumper correctly set on the BlueSCSI and are there maybe SCSI ID conflicting between the internal and external SCSI‘s?

Yeah, looked at that and the termination is on, I have tried booting with different images and same result - no matter what I try internally, even with the external drive removed, I can't get it to boot.

I got a BlueSCSI v2 today. When I insert the SD card and power from USB it boots correctly, but as soon as I put it inside my CC, the green LED flashes 5 times indicating it can't see a valid boot image.

I've downloaded the known working images so doubt it's the images being the issue.

 

[ESM-NL]

When you have it startup with the external, does the internal mount?

 

[macsonny]

When you have it startup with the external, does the internal mount?

No it doesn't. I've tried SCSI scanners and it's not seeing the internal drive at all.

 

[ESM-NL]

Oke, clear. I can now only think on a „no connection“ in mechanical way: internal SCSI cable bad, maybe solder joints of the connector on the logic board are bad or a connector pin is bend or broken off. SCSI chip sould not be the problem, because it starts up with external SCSI.