troubleshooting hints:

http://www.vcfed.org/forum/showthread.php?59853-Dead-power-supply-Olivetti-M24&p=478613#post478613

http://www.vcfed.org/forum/showthread.php?70503-Xerox-6060-restoration&p=596174#post596174

I have laid out a simple 3" by 3" PCB with the following features:

- takes 20- or 24-pin ATX power supply connector as input
- routes the GND, +5V, +12V, and -12V rails to appropriate connectors for attaching the original Xerox 6060 / Olivetti M24 / AT&T 6300 internal cables
- boosts the 12V rail to 15V using a XL6009 IC (this can be disabled through a jumper if not needed)
- has a 3-pin fan connector to power a 12VDC fan
- has a jumper cluster to select four possible speeds for the fan
- has a jumper for the ATX "power on" switch (if jumpered closed, the ATX power supply will turn on as soon as the mains switch is operated)
- has three status LEDs (5V stand-by, main 5V, and boosted 15V)
- has a 3.3V post for future expansion / in case you need this voltage for something else (low amperage only)

In my mind it is meant to be attached to the side of the original power supply enclosure, with the ATX cable attaching from the back and the Xerox cables attaching at the front. This way it will also receive some airflow from the fan.

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The PCBs arrived! And, most importantly, most components arrived as well, so I very quickly soldered one together... and it works!

The holes on the PCB for the thick Xerox/6300/M24 power cables are for M4 screws, which fit the metal connectors well enough (well, with a bit of persuasion for one of them... or you could use M3.5 screws). The PCB connectors for the CRT and +/-12V are not the same as in the original but they fit well - if anyone knows what exact model number the original connectors are (they are made by AMP) pls do let me know...

The 15V voltage regulators works like a charm - it heats up far less that the pre-built version I originally got from eBay, probably because the PCB and the heat dissipation pads I put in are larger, and the support components I chose are over-specified.

Also I originally intended to put in an “angled” ATX connector but I created the PCB footprint for a straight-up one I already had, assuming the angled one I had ordered (but not yet received) would have the same one, but alas... no. So straight-up it is.