The power supply for one of my computers needs a new fan. How do I discharge the power-supply capacitors to make it safe to open up?
With an ATX power supply, it's just a matter of unplugging it, waiting for the standby power LED on the mainboard to go off, and punching the power switch a few times to discharge any remaining power. But AT doesn't have standby power, and the power switch is connected between mains power and the PSU. Is it simply a matter of turning it off and waiting a few seconds, or is there more to it?