That's a killer machine. It would look even more killer with a pair of iMac G4s as displays. I'll pull my inverter this weekend and head to work off the clock to see if I can get a partial schematic figured out under X-ray. I might not even need the X-ray as much if I can find datasheets for the components on the inverter board. The larger SOIC has me the most curious. I can't quite read the numbers on it in that picture at the other forum you posted the link to. I did find another supplier for inverter boards and one could be had for $26 in six-tube form, but it requires modification of the tube connectors to accept the doubled-up ones. Also, I don't think it's adjustable. Worth mentioning: The panel has a little more strict standards for power input than what's considered spec for an ATX power supply. While ATX allows +-10% on the 12V rail, the panel's Vcc of 12VDC is only rated for +-5%. The supply inside the iMac should of course operate within this range and, according to the USB 2.0 iMac G4 service manual, the supply is live on at least the 12VDC rail as long as it is plugged into the AC main. It might be better to use the iMac's PSU to run the panel. In my case, I will be putting a USB optical drive and eSATA-connected hard disk (or two?) and powered USB hub in the gutted iMac. All of these will surely run from the stock PSU with better lifetime on the PSU for lack of the logic board. After removing the guts from my own G4, it's dangerously top-heavy when the neck is all the way out and down. If you aren't going to put drives inside yours, weight them with a sandbag or something.