I have the following situation:
- Living in Europe (220V sockets, 50 HZ)
- My wife came to me and said she tried to start up our sons PC and she heard a short zap, then nothing happened; my son confirmed he heard the zap also (also he said he also heard it earlier for a longer time - that's when he called my wife to see what is wrong, when she came there was no sound but zapped when she pressed the button)
- When I pushed the button nothing happened (there was no power)
- When I checked I noticed that the socket cable was not fully pushed into the PSU
- When fully inserted everything was working fine
- Before leaving the kids play again I am trying to understand what happened: clearly the cable was incorrectly fit (probably got loose when vacuuming around or something). However... I don't understand the zap
- There was no smell, or any kind of visible damage to the cable
- There was no smell (or maybe a super faint one) over the PSU... only sense it when literally pressing my nose against it
- The fuse didn't pop
- The differential protection didn't pop
- There is no voltage on surface of pc (since I have grounding that's normal but thought worth mentioning)
- The PSU didn't enter protection mode
- No real damage to internal components seem to have occurred
- The differential protection pops fine when the tester is being pushed
- I am sure that neither my wife or my kids is lieing to me regarding the sound (and both described it as an electrical zap quite consistently)
Initially I thought maybe it was an electric arc "in" the live wire connection but... how come no damage to the cable then? Or if it was only an imperfect connection that was kind of working why fully stop with no reason? Also an electric arc should have losses so why didn't the differential pop?
What I am ultimately trying to asses is if the socket and PC are safe to be used by my family. I am inclined to change the PSU (but it is a seasonic prime... which I consider actually being a good PSU... I am nost sure the problem is there).
Any idea what might have happened?