The power supply on my PC works, but the fan is making an intermittent "tic-tic-tic" noise, so I decided to replace it.
After installing the new power supply, I got nothing. No LEDs, no fan, no hum... nothing. So I pulled the new power supply out, manually jumped pin 14 to ground, and it fired right up. I checked the voltages on all of the pins and all are in spec.
While I was doing this, I reinstalled my old power supply and my PC worked fine, so I guess the socket and the on/off button were not damaged in the switch over.
So I reinstalled the NEW power supply again and I got... nothing. Again.
This has me stumped. The new power supply is fine when outside the machine, and the socket and on/off button in the machine seem to work fine as well. Any ideas?