The Cherokee International QP2A1CDV is a dual‑output AC‑to‑DC power supply (115/230 VAC to 5 VDC and 12 VDC) rated at 250 W, commonly used in industrial control panels and servo drive enclosures. Typical failure modes for this class of unit include capacitor degradation on the DC side, overheating of the internal switching regulator, or damage to the AC input rectifier bridge from transient spikes; these often manifest as a loss of one or both DC rails or excessive heat during operation. First‑check steps: verify that the AC mains voltage is within spec and that the supply’s fuse/thermal protection has not tripped; measure the output voltages with a calibrated multimeter while the unit is powered on; inspect for bulging capacitors, burnt components, or loose connections on the PCB.[oss-gpt-20b]