Delta Electronics DPS-400LB A power supply

Delta Electronics DPS‑400LB A is a 400 W switching power supply used in industrial control cabinets and server racks to provide regulated DC output from mains input. Common failure points for this class include overheating of the main transformer, degradation of the internal rectifier diodes or MOSFETs, and failure of the built‑in over‑current protection circuitry. Begin troubleshooting by verifying that the unit receives proper 100–240 V AC input voltage and that the output voltages match spec; then inspect for visible signs of component damage such as burnt capacitors or melted heatsinks, and check the status LEDs or diagnostic outputs for fault codes if available.[oss-gpt-20b]

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We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

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