Osborne OCC1 problem

Hmmm.... OK, stranger & stranger. The power supply has 3 identical "plugs" (for want of a better word) coming off the board, each with 4 pins. The voltage on each corresponding pin of each plug is identical; so I'm assuming they're there to power other optional (and presumably never built) kit. Anyhoo... Without my voltmeter, I've done my best to calibrate the 'scope (which I've never used in anger before) to a sensible scale. From this scale I have concluded that, with respect to GND: Pin 1 has approx -13.5v - but is not connected to anything Pin 2 has approx +12.0v Pin 3 has approx - 0.1v (and is a bit rough, but only on the millivolt scale) Pin 4 has approx + 4.5v (higher, actually, somewhere between 4.5v and 5.0v All three signals are pretty smooth, I can't see any rectification noise on them until I get into the millivolt scales - even as far down as I can adjust the 'scope. The crystal is working properly :) I've not checked the voltages going into the monitor yet - I need to do some additional dissasembly so I can get the probe in, and it's knocking off time... However, the PSU looks good, I'd say. The display is still fritzed :( Cheers! Ade. No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.16/1433 - Release Date: 14/05/2008 16:44