GiaThnYgeia wrote: > > > Vignesh Ragupathy: > >> >> There might also be an issue with power switch. You can try disconnecting >> power switch and touch the power switch pins simultaneously with conductive >> metal like screwdriver. Just careful when doing this. >> >> -Vikki > > Never a good idea, there are cheap tools of measuring current, a short > can blow a good power source/transformer. How do you check industrial 3 > phase 440V, just ground it with a train rail see if there are any sparks. >
Hint - that's exactly what the on switch does. Granted we're talking 5V with a max current of 1-2mA or somesuch, and not 440VAC. It's no more dangerous than touching the red and black leads of a battery holder[1] to a small lightbulb (such as used in a flashlight, model car, etc.) or a LED to verify it works / you have polarity right. Actually, given that it's limited to 1-2mA, it's probably SAFER than said battery-holder (since most dry-cell batteries can supply 2A current, albeit for a very short amount of time). And to ensure the motherboard isn't the culprit, you can always connect the PS_ON (green) wire (in the 20/24-pin connector)any GND pin (black wire) with a short length of wire. [1] https://img.fasttechcdn.com/128/1289504/1289504-2.jpg -- |_|O|_| Registered Linux user #585947 |_|_|O| Github: https://github.com/dpurgert |O|O|O| PGP: 05CA 9A50 3F2E 1335 4DC5 4AEE 8E11 DDF3 1279 A281