The Power Pac VME100‑3‑M160 (105558‑001) is a modular industrial power supply that converts incoming AC voltage into regulated DC outputs for control and drive systems. Common failure points in this class include degraded output capacitors, burnt or tripped protection fuses, and overheating of the internal switching regulator; these often manifest as dropout, over‑voltage spikes, or audible noise. First‑check steps: verify input voltage and phase balance with a multimeter, inspect all fuses and thermal shutdown indicators, then measure output rails against specifications while monitoring for ripple or temperature rise. If outputs are unstable, perform a continuity test on the internal power path and check for any visible signs of component damage such as burn marks or swollen electrolytics.[oss-gpt-20b]