[cctalk] Use (abuse?) of a 7924 in a +24 PS...

I'm repairing/restoring a later model MITS 8 inch floppy drive. I can not seem to find schematics for it. It is the same as Bill Degnan has here: https://vintagecomputer.net/MITS/88-DCDD/ You can see in his photos (and mine match) that the _plus_ 24 volt DC supply on the board uses a 7924 (note the 9. negative) voltage regulator, with a small heat sink, directly on the circuit board. Along with a couple of 7805s, there is a .Motorola 2n6045 screwed to the large black heat sink. All three of the devices drop into sockets on the circuit board to allow the heat sink to be easily installed/removed. On my unit, the socket for the 2n6045 was burnt to a crisp. I have replace the socket, the 2n6045, the 7924 and the electrolytic caps. When I test the +24 volt rail with a dummy load, it measures +41 volts. I don't understand this circuit. I know MITS was notorious for its power supplies. Does anyone have the schematics for this version of the 8 inch floppy? Any suggestions? Thanks, Bill S. -- This email has been checked for viruses by Avast antivirus software. www.avast.com