Macintosh-HW/BlueSCSI
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link to mac plus mod

Eric Helgeson
2021-05-14 12:31:58 -05:00
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Troubleshooting.md

@@ -30,7 +30,7 @@ If you purchased a pre-assembled kit, or have already gone through the hardware
## No Power
Most computers should provide SCSI termination power through the SCSI cable, which is enough to power the BluePill(Mac Plus is a known exception unless you do a mod), but it’s entirely possible a computer doesn’t for whatever reason. Unplug the BlueSCSI from the computer’s SCSI Connection and try to power it either through the MicroUSB port on the BluePill, or 5v through the Berg connector. If it lights up at all, it’s possible you computer doesn’t provide the correct SCSI termination power. Double check all your solder joints on the BluePill, SCSI connector, and Resistor networks. If those are good, you can get a cheap Molex to Floppy(Berg) power connector and use it that way.
Most computers should provide SCSI termination power through the SCSI cable, which is enough to power the BluePill (Mac Plus is a known exception [unless you add a diode](https://retroguy.blog/2020/01/14/booting-a-mac-plus-out-of-an-external-scsi2sd-card/)), but it’s entirely possible a computer doesn’t for whatever reason. Unplug the BlueSCSI from the computer’s SCSI Connection and try to power it either through the MicroUSB port on the BluePill, or 5v through the Berg connector. If it lights up at all, it’s possible you computer doesn’t provide the correct SCSI termination power. Double check all your solder joints on the BluePill, SCSI connector, and Resistor networks. If those are good, you can get a cheap Molex to Floppy(Berg) power connector and use it that way.
Also ensure that nothing on the BlueSCSI has been shorted out at all. Any time you’re working on it make sure any headers from components aren’t resting on a conductive surface.