my monitor 's power socket is a bit ... problematic. it requires me to adjust the power adapter a bit , when the adapter is in the "right" position only it can turn on

so yesterday when i was cleaning my desk , i probably move the power plug off position so the monitor isnt starting

so i tried to play with it a by adjusting the monitor power adapter, but as i adjust it, i heard sound like "ze ze ze" coming from the CPU power adapter (the one connecting to the CPU not to the wall socket) instead.

So i was adjusting the monitors power adapter, but its my CPU that is reacting towards that?

Later i saw a spark coming and my CPU instantly turn off. i restarted it and everything seems ok.

But i am concern, did i pop a capacitor or something? why is my CPU reacting towards me adjusting my monitor's power adapter?

should i do anything now?

it sounds like ur power outlets aren't grounded properly?
what does the "power adapter" means for ur monitor? is it the power plug itself? u adjust the plug around the power outlet itself, while the pc connected to another power outlet is reacting?
secondly, the PSU should have some sort of current and short circuit protection. what is ur PSU?

this one, my monitor 's connection with the power adapter (in red circle) isnt solid and requires some "adjustment" to work, sometimes if someone touch it, it can be loose. so i did just that, trying to adjust the plug in red circle. but seems like my CPU's adapter (the same in red circle) is reacting instead despite the fact that i didnt touch my CPU power cable)

both are connected to the same power socket via multi socket extender

i cant remember what is the PSU, bought many yeas ago but i didnt save on the PSU, i told the shop who assembled my PC i want a good PSU even if it costs more.

my pc working as normal today lol

This post has been edited by 15cm: Jul 7 2024, 01:31 PM

Poor connection due to wear and tear, your monitor plug will soon become unusable due to repeatedly oxidized (black spot on the copper contact), it increase electrical resistance, hence you need to keep adjust it.
just get a new cord?

i dont get it , u mean my monitor or my cpu?

because having to repeatedly adjust it is not my immediate concern right now, my concern is why is there a pretty big spark on my cpu and will it fry my PSU

then u need to check ur PSU. need to know what model it is
i'm making a guess, but you prob have 2 or more power outlets side by side, and these power outlets share the same circuit. this isn't an issue so dw.
issue is when you're fiddling with the cord at ur monitor, you might have caused uneven current, which might have then caused voltage/current spike or surge but ur PSU did not protect it. that may explain the electrical spark in ur CPU power connector. I assume the power connector u mention is the top left side of ur motherboard, am I correct? either single 8-pin or 2x 8-pin.

this is why u always make sure u turn all the things off instead of fiddling the power cords when the electric is still alive

edit: forgot to read ur using extension. then confirm it's the same circuit being shared between ur monitor and pc.

This post has been edited by lolzcalvin: Jul 7 2024, 02:24 PM

should i get one of those surge protector type of extender?

sound more like your multiplugs is having issue.. monitor cable wont affect cpu cable..

no, surge protector does not protect against uneven power from within the extension, but from the power socket it's connected to, only for power surges, such that in the case where ur home's main breaker is not sensitive enough to trip when detecting a sudden spike (e.g. from thunderstorm, lightning strike)..
ur problem lies firstly in ur monitor's power cord (cacat) and ur PSU (didn't protect against the spike). then finally perhaps get a good extension with fuse and also protect against external surges for the peace of mind..

note that many if not all side by side power outlets are usually sharing same circuit, which is the reason why in ur house circuit breaker box, when switch off one breaker, a series of power outlets will go down...a power extension outlet does the same thing.

Check your connections and look for any damage. If everything seems fine now, keep an eye on it.

I’ve had a similar issue before. It sounds like you might’ve had a loose connection or a short somewhere. I once had a spark when adjusting cables, and it turned out to be a grounding problem. Check all your cables and connections to make sure nothing’s damaged. If you keep seeing weird stuff or if things don’t seem right, it might be worth getting a pro to take a look.

Change them. Those are basically cheap.

It is electrical feedback caused by the shorting, if both monitor & CPU are powered from same/beside wall outlet, the loose connection from the monitor power socket might be giving electrical feedback into the powerline which gets pickup at the CPU PSU being the nearest.

Immediately change out the monitor power cable and assess if its the power cable or wall outlet wiring is causing this issue.

Then check if theres any signs of damage at PSU, check for any brown/burn marks, check for burnt smell. Its possible without any signs of damages the PSU still can use but I would change it just to be safe.