pak@sunpix.East.Sun.COM (Paul Kaiser - Sun Visualization Products) (03/19/91)
I have an old COMPAQ Deskpro Model III. (No, not a Model 386, it is an 8086 machine. Like I said, it's old.) The power supply died, and all the COMPAQ dealers I spoke with wanted over $300 for a new power supply, which is probably more than the machine is worth. So I bought an XT-clone power supply from CompuAdd for $70 (even though the form factor and connectors are incompatible) and started to build an adapter. COMPAQ uses a heavy-duty 20-conductor ribbon cable from the p.s. to the motherboard. I've got it pretty much figured out except for pin 1, which appears to be labeled "+5 RST". Pin 2 is labeled PWR GOOD, for which there is an equivalent signal from the XT power supply. I tried to follow the traces on the COMPAQ power supply PC board, and it looks like pin 1 is related to PWR GOOD. Can anyone shed any light on the situation? The local COMPAQ-authorized repair center says the power supply connector isn't described in the repair manual. Any other suggestions? (Other than "get a real machine.") ------ Paul Kaiser, paul.kaiser@east.sun.com