The H724 power supply in my PDP-8/e works OK for about 5 seconds and then the +5V output goes to about 3.0V. If I leave it on for a few more seconds it will blow the 20A fuse for the +5V output. I have the power supply partially disassembled and disconnected from the chassis. I don't see anything obviously fried. There are three ring terminals with two wires each connected to the + side of C205. Two of the wires get hot in just a few seconds. I have not disassembled the wire harness, but I suspect that they are the wires that go to the fuse holder. C205 is the output filter for +5V. The capacitor resistance goes above 3k Ohms if I leave the VOM connected for about 20 seconds, so the cap is not the 20A short. Should I just keep disassembling the power supply and tracing the warm wires? Anyone have experience repairing one of these power supplies? -- Michael Thompson