I got an old 420 watt Tagan power supply. It seems pretty good quality. I wanted to convert it into a bench power supply. It worked fine until I THINK I messed things up. I’m not sure if i actually damaged it or it was just too old and broke down. All I did was desolder a bunch of useless wires from the 3.3, 5, 12 volts and ground rails. After I connected it to a power source and measured the voltage at each rail, I found out that the 3.3 rails output was 5.20 volts!!! Why? Is there any way to fix it? Like replace any broken component. Also I did a continuity check between the 5 and 3.3 volt rail. There wasn't any short circuit.