Verifying the Motherboard 24-Pin Connection Intermittent power issues can stem from a poor connection rather than a defective PSU. Inspect the socket on the motherboard for debris or corrosion, which can also interrupt the return path for electrical current.
Verify Power Supply Cable Connection Securely
If the readings fluctuate wildly under load, the internal transformer or regulation circuitry is likely degraded. Bent or broken retention pins can prevent proper contact, causing the system to behave as if power is absent.
Component-Level Suspects and Capacitor Health Inside the PSU, capacitors age and lose their ability to smooth voltage, leading to ripple and instability. Examine the primary electrolytic capacitors near the heat sink for bulging tops, leakage, or crusty residue.
Verify the 24-Pin Motherboard Cable Connection Is Secure
Voltage spikes or drops under no load, or larger deviations when a load is applied, indicate a failing regulator stage. When to Replace and What to Consider If diagnostics confirm unstable voltages, persistent ripple, or physical damage, replacement is the most reliable solution.
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