Troubleshooting Power Supply Unit (PSU) Failures in LED Displays

Common PSU Failure Symptoms Power supply units in LED displays typically fail due to capacitor degradation, thermal stress, or voltage surge. Recognise these symptoms: Display or motor component completely non-operational despite mains power present Intermittent operation or random reboots under load Audible buzzing or clicking from PSU enclosure Visible bulging capacitors or burnt smell from PSU area Diagnosis Steps Verify input power: Use multimeter to confirm 230V AC (Australia) at PSU input