Workstation Power Supply: Unstable power-good signal | Auckland
Pattern to record: Startup loops or resets occur before POST despite normal unloaded voltages.
Identify the supply and load
A workstation may have proprietary power connectors, multiple processors or high-current expansion cards. Record the installed configuration and OEM supply specification rather than assuming an ordinary ATX replacement is suitable. One possible explanation is that the supply does not reliably indicate that output rails are ready.
Mains and connector safety
Proprietary workstation connectors must not be assumed to follow ATX wiring. Forcing the signal high can expose the motherboard to unstable voltage.
Workshop checks
- Check event indicators, connector mapping and rail stability with the installed configuration documented.
- Monitor the power-good timing and rail stability through startup.
Repair and loaded verification
If the checks support this cause, replace the supply or repair its control stage professionally. Verification should cover cold start, CPU and GPU load, storage activity, restart and extended work.
For an assessment of your professional workstation, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.