PSU capacitor bulging/failure

What is PSU-CAPACITOR-BULGE?

Physical inspection reveals bulged or leaking electrolytic capacitors inside the power supply unit. Bulging capacitors are a sign of imminent catastrophic failure. A failing capacitor can cause voltage ripple, power rail instability, and complete PSU failure. In worst cases, capacitor failure can cause fire or damage downstream components.

Common Causes

• Component aging (5+ years)
• Chronic voltage instability
• Manufacturing defect (capacitor plague era)

Step-by-Step Fix Guide

• 1
  Stop using the PSU immediately

  A PSU with bulging capacitors is a fire and safety hazard. Stop using it immediately and replace it.

• 2
  Replace the entire PSU — do not repair DIY

  Never attempt to repair a PSU yourself — capacitors store dangerous charge even when unplugged.

• 3
  Have a qualified technician inspect other components for damage