More DEC Bad luck.

Here are the notes I made on the power supply connectors in my Alphaserver 1000A which has a single power supply in the lower bay which I called PSU0. The readings were taken with a cheap and cheerful analogue multimeter which may be reading a little on the high side. The location of pin 1 is marked on the board but I couldn't tell whether the numbers run up and down or across. I assumed up and down, like an IDC connector. J21 power connector on main board: PSU Main board -------- ---------- 1 (purple) GND GND 2 (black) Output? Input? -7.7V when running 3 (black) GND GND 4 (black) GND at PSU0 Connected PSU detect? 5 (blue) Output? Input? +12V when running 6 (black) PSU1 only Connected +4.2V when running PSU detect? 7 (yellow) Output? Input? -12V when running 8 (red) Output Input +5V at all times 9 (red) Output? Input? +5.1V when running 10 (grey) Output? Input? -5V when running 11 (black) Connected GND 12 (orange) Output? Input? +3.5V when running 13 (white) Input? Output? Normally 0V. Pulse high to trip PSU. 14 (black) Connected GND 15 (white) PSU0 only +4.5V after running. Power good? 16 (white) Input Output Ground to enable PSU power on 17 (white) PSU1 only 0V at all times? Power good? J19 power connector on main board: All red leads +5.1V All black leads 0V J20 power connector on main board: All orange leads +3.5V All black leads 0V Regards, Peter Coghlan.