: Even at 90% efficiency, a 2100W unit drawing full load can generate over 200 watts of waste heat. This will make the casing feel warm or even hot to the touch.
A switching power supply compensates for low AC voltage by drawing higher input current . If your line voltage drops to 90V AC while the unit tries to output full power, internal MOSFETs switch harder and longer, generating excessive heat. Check your mains voltage. hys3c210cs power supply hot
If your is running hot to the touch or causing sudden system shutdowns, you are likely dealing with an overheating issue. This 650W, 80 PLUS Gold certified unit is designed for efficiency, but even high-quality PSUs can struggle if airflow is restricted or internal components become compromised. Common Causes of Overheating in the Hys3c210-cs : Even at 90% efficiency, a 2100W unit
Use a multimeter. Set it to DC volts.