So, I drove to VCF East last week, and I spoke to Mike of Mike's Mac Shack on YouTube. He mentioned a person who fixes G4 MDD power supplies. This looks like the guy. Apologies for the LONG URL:
I'm seriously considering this guy's service. I might still hold onto the ATX power supply as a back-up.
Saul
REPAIR SERVICE Apple PowerMac G4 Mirror Drive Doors Power Supply MDD API1PC36 | eBay
Can you refurbish all types of MDD power supplies?. All MDD power supplies are getting old. This will help to insure a long, and trouble free life. I only use top quality parts which are better than the original parts.
www.ebay.com
I'm seriously considering this guy's service. I might still hold onto the ATX power supply as a back-up.
Saul