Compgeke
Veteran Member
I have 2 Tandy 1000s, one with no PSU and one with a broken one (cracked PCB from someone pressing the switch too hard), and I'm willing to build one myself using whatever it takes (neither have a top cover, one doesn't have a floppy drive, so who cares what size a PSU is).
From what I can tell the power supply outputs +5v, +12v and -12v. The connector to the motherboard appears to be (from red to white), +5v, +5v, G, G, +12v and I'm not sure what the white is, I'm going to assume -12v as that's the only one I can't identify for sure (got the other connectors from the pinout of the molex connector that runs through the 4 center pins).
From what I can tell a PSU can easily be built from a regular AT style power supply, or possibly a power brick from an external CD drive if I could find one with -12v, I'm holding one now that outputs everything except the -12v, heck, even an older ATX power supply can probably be modified to work as a toggle switch connecting the power on (green) to a ground would work and fit into the original power switch hole.
I'm looking to find out if my observation pinout for the PSU is correct, and if it's possible to hack together something else to work with this.
Thanks!
From what I can tell the power supply outputs +5v, +12v and -12v. The connector to the motherboard appears to be (from red to white), +5v, +5v, G, G, +12v and I'm not sure what the white is, I'm going to assume -12v as that's the only one I can't identify for sure (got the other connectors from the pinout of the molex connector that runs through the 4 center pins).
From what I can tell a PSU can easily be built from a regular AT style power supply, or possibly a power brick from an external CD drive if I could find one with -12v, I'm holding one now that outputs everything except the -12v, heck, even an older ATX power supply can probably be modified to work as a toggle switch connecting the power on (green) to a ground would work and fit into the original power switch hole.
I'm looking to find out if my observation pinout for the PSU is correct, and if it's possible to hack together something else to work with this.
Thanks!