Pattern to record: Plastic is browned or the plug becomes hot during workload.

Mains and connector safety

Stop using the compact PC and disconnect mains power if safe. Do not touch a hot plug or repeat a combined workload to reproduce the heat. Keep the PSU enclosure closed; its compact size does not remove stored-energy hazards.

Identify the supply and load

Compact desktops may use proprietary PSU shapes and connector wiring. Check the exact system and supply part numbers before substitution, and inspect airflow without opening the mains-powered supply. One possible explanation is that poor contact has created local resistance at a high-current plug.

Workshop checks

1. A technician should inspect both mating halves and nearby wiring with power isolated according to the service manual, looking for heat damage, shorts, loose contacts and restricted external airflow.
2. Match the OEM supply, connector pinout and cable assembly to the exact system. A compatible physical shape alone does not establish safe wiring or sufficient capacity.

Repair and loaded verification

Replace heat-damaged mating parts or assemblies as the model requires and correct the cause of poor contact. A burnt plug must not be reused with a new socket. Powered diagnosis is a professional step only after unpowered checks and any necessary repairs have established that it is safe. Using appropriate test equipment and the correct power supply, a qualified technician can then verify cold and warm start, processor load, storage activity, USB load, sleep and connector temperature. Stop the test if abnormal heating returns.

For an assessment of your compact desktop, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.