Power Supply Fan Up Or Down. Never have the fan facing a plate of metal. Determine where the PSU is intended to fit; this is typically at the bottom.
If the fan still goes crazy, then your PC most likely has a hardware issue. The instance occurs when the power supply or on/off switch have failed. To figure out whether your PSU fan needs to point up or down, start by looking over your PC case.
The power supply should include an over-temperature protection sensor, which can trip and shut down the power supply at a preset temperature point.
The power supply shall automatically recover from AC power loss.
I understand, the main PSU fan is an intake, and it exhausts through the back mesh (where the power cable plugs. Maybe you can talk about the difference of those cases? thanks. The power supply is located at the back of the computer, usually at the top.