High-pitched whistling, fluctuating voltage, or the unit failing to turn on under load.
Troubleshooting and Repairing the HYS3C210-CS Power Supply The HYS3C210-CS power supply hys3c210cs power supply patched
OEM used a 0.1Ω, 1% sense resistor with a comparator threshold set too low. hys3c210cs power supply patched