The Kaiser LS202LV1 (P/N 1101503) is a high‑voltage power supply module used in industrial laser and precision control systems. Common failure points for this class of units include degraded input/output capacitors, burnt or tripped fuses, failed HV transformers, and overheating of the regulator ICs; these often manifest as no output, erratic voltage spikes, or audible whining from the transformer. Begin troubleshooting by verifying that the supply receives correct mains voltage and that all protective fuses are intact, then perform a visual inspection for burn marks or swollen electrolytics on the board. Next, measure the DC input and HV output rails with a calibrated meter to confirm proper regulation, and check for any error codes or status LEDs indicated by the controller interface.[oss-gpt-20b]