Hello wonderful people of the forum! I'm having this issue with my bench power supply, where if I connect one of its leads to ground it sinks a lot of current trough to ground. The power supply is based on an ua723(lm723) and it uses a regular transformer. I had a suspicion that maybe the transformer had bad lacquer and was causing my issue because between ground and the negative output I only had ac voltage difference which I was expecting but for some reason it syncs a bunch of current, and it fries my driving transistor(bd240) but my power transistors(2n3055) are fine, so I replaced it with a torroidal one which I know is good but sadly my problem still persists. What could be the issue?