DP-40205 top
Exploded FET
These pictures come from a Dynapower USA DP-40205 400W power supply. It appears the standby regulation failed and took out the FET pictured above and also the capacitor and resistor near the top of the fan. The exploded piece of the FET was rattling around the power supply when it was opened and the part that remained on the board was loose. It’s suspected the capacitor damage was from overvoltage when the regulator failed for unknown reasons. Credit: http://blog.kevtris.org/