Speaking of IBM, Schematics for a ps/2 P70 power supply??

I liberated a plasma display ps/2 p70 from a friends garage- It does the typical power supply thing where it comes up for a bit, and then konks out. I took it out of the machine, and have pretty much made sure the power supply is broken- I have tried loading the DC outputs with my bench load IDE drive, and it comes up and goes down again, unless it is expecting a load on the plasma screen power connector. I am a power supply newby. The supply only turns on long enough to get the fan to go about 1/2 rotation, and the dies again. This gets kind of tricky because I have never managed to fix a power supply, ever, I usually just find a spare from the bin and pop it in. However, I don't have a spare that will do whatever voltages the plasma display requires, nor do I have a supply that is even close to this form factor. It appears from my probing that at least the filter caps are good- I am getting a pretty stable ~160 volts DC across two separate large filter caps, which seems a bit big, but I have not learned enough analog to have a clue how this supply does what it does. Thanks for any assistance, Greg Linder