Hi, I recently replaced my PSU with an Endorfy Vero L5 500w. Previous PSU was a SPC Vero L1 500w iirc, it had started producing kind of loud crackling noises, and sure enough - tested under stress it made a hellish noise and I just shut it down before it crapped itself. The new PSU makes noises under similar conditions and at a similar rate, but the noises are not as loud and noticeable. They are still there though and worry me, is it something worth stressing over or is it something normal for new PSUs that will sort itself out after cleaning or some time?
I guess you are referring to coil whine, alternatively bad fan bearing. The noise is normal, but to an extent. How recent was that? If it was in the week prior, I’d return it.