Stentofon 036 1000637400 is a switched‑mode industrial power supply that outputs 48 VDC at up to 2 A from a 100–240 VAC input. Common failure points for this model include degraded output capacitors, failed MOSFETs or rectifier diodes, and overheating of the internal heat sink due to dust accumulation or inadequate ventilation. Initial troubleshooting should verify that the input voltage is within spec, measure the output voltage under load, inspect the PCB for burnt components or solder bridges, and check the thermal profile of the power stage. If the supply fails to regulate or shows a significant ripple increase, replace the bulk capacitors and any visibly damaged switching devices before proceeding with further diagnostics.[oss-gpt-20b]