2 days ago, I upgraded my Ryzen 1600 to the 1800x. As my case is huge and very heavy (Coolermaster Cosmos II) I decided to swap the CPU's with the case upright and still plugged in. As I was about to lower the arm to lock the 1800x into place, the pc turned on, and my initial reaction was like having an electric shock (I wasn't actually shocked) but I instantly moved my hands away and I wont repeat what I said... This has never happened before and I was just wondering if this is a common occurrence and what the cause might be.
hi midian glad to see you got away with it , fruitbats comments are spot on , when my pc is turned off there are still lights on the mobo , the latest generation of mobos draw power all the time effectively sending power to your usb;s all the time so you can use the pc to charge a phone , fitbit or tablet even when pc is turned off. I did not realise this was happening until I left a set of head phones plugged in and the " show off " lights on them were still working.
If its still plugged in and switched off at the mains there is still a small trickle of power through the motherboard.
Sorry but I don't understand your logic here. If it is switched off at the mains then there is no supply of power to any component in the computer. I think you are referring to the charge maintained on the PSU smoothing capacitors which can take many minutes after switch off to dissipate and can maintain the M/B LEDs etc for a period but once this has finally dissipated then there is no M/B activity whatsoever as far as I know.
Our ancient tumble dryer has a big juicy capacitor in it. It may have been something similar in your washing machine that bit you.
I always remember how my physics teacher, who'd been involved with radar development during WW2, explained how they left charged capacitors on the shelf contacts up, so that anyone casually picking them up with their palm across the top would get a surprise.
Yes I remember that too. In fact in the larger ground radar systems there was a thing called a debo**ocker" stick which was used to ensure that capacitors were discharged before working on the equipment.
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