Testing with a Paperclip A paperclip test provides a quick check of the PSU’s ability to generate power, though it only confirms whether the unit can spin, not whether it delivers stable voltage. Inspect the socket on the motherboard for debris or corrosion, which can also interrupt the return path for electrical current.
Perform the Paperclip Test to Quickly Diagnose Your Power Supply
Alternatively, a dummy load can simulate the power draw of components, revealing voltage sag when the unit is stressed. 3V, +5V, and +12V rails; each should read within ten percent of their labeled values.
Voltage spikes or drops under no load, or larger deviations when a load is applied, indicate a failing regulator stage. Diagnosing a faulty power supply requires a systematic approach that combines visual inspection, electrical testing, and load validation to isolate the root cause.
How to Perform a Paperclip Test to Quickly Diagnose Your PSU
If the readings fluctuate wildly under load, the internal transformer or regulation circuitry is likely degraded. Ensure that the power cable is securely seated in both the wall outlet and the PSU, and verify that the correct voltage switch on the back of the unit matches your regional power standard.
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