How to Reset the PC Power Supply

Description of the problem:

The PC fan isn't running, all power appears to be off (even though it is plugged in), and there is a possibility that the power supply was shorted out.
Reset the power supply by following these instructions:
    1. Unplug the control power
    2. Turn and hold the key for 10 seconds
    3. Wait for 10 minutes
    4. Connect power and turn the key to power on the control
    5. If the control doesn't power on, continue below
The next step is to remove the power supply from the PC (search Knowledge Base for instructions to remove PC)
   1. After removing the power supply, we want to bench test it with only the power cord plugged in
   2. Hold the power button down for 20 seconds and release
   3. Wait for 10 seconds and then press the power button to power on the supply
   4. If the power supply still doesn't power up, it is presumed to be inoperable
Keywords: 7640