I discovered I have a Dynacomp PSU thst will change the +5/-5 rails drastically after 15-20 minutes of being powered. They hold a good 5.03/-5.12 for 15-20 minutes then I see them (dropping on the +5 and increasing in the -5). Will change from 5.03/-5.12, minute later 5.02/-5.11, minute later 5.01/-5.10 it will keep going. I left the room for a few minutes and when I came back they were at 3.45/-3.75. I shut it down. After a full recap it did the same thing. After I shut it off for 5 seconds and power back up it holds fine for the same 15-20 minutes before changing again. I’ve read several posts here in PSU issues and I have a feeling this problem is deeper. First time I’ve seen this happen with a PSU.
Any input would be appreciated.