Power-One D.C. Power Supplies MAP55-4002 D.C. power supply Repair Service

Professional diagnostic and board-level repair service for this Power-One D.C. Power Supplies MAP55-4002 D.C. power supply.

The Power‑One MAP55‑4002 is a chassis‑mounted AC‑to‑DC converter rated at 100–240 VAC with four regulated rails (5 V ± 6 A, +12 V ± 1 A, –12 V ± 1 A). Common failure points in this series include blown input fuses or output protection diodes, dropout of the linear regulator due to overheating, and degradation of electrolytic capacitors on the output rails. First‑check diagnostics: verify that the unit receives proper line voltage and that the internal fuse is intact; measure each rail under load for correct voltage and continuity of the regulator circuitry; visually inspect for burn marks or swollen capacitors before proceeding with component replacement. Post Comment

Need your Power-One D.C. Power Supplies MAP55-4002 D.C. power supply repaired?

Ship your unit to our North Carolina repair shop for component-level diagnostics and a repair estimate. We service industrial control electronics and power systems nationwide.

• ⚙️ Board-level diagnostics – Troubleshooting beyond simple module replacement
• 🔁 Clear approval process – No repair begins without your approval
• 🧰 Expert Technicians – Decades of board-level experience
• ✅ 1-Year Warranty – Included with completed repairs

Start a Repair Request   Call 1-336-969-0110

Nationwide service • Industrial-grade testing • 1-year warranty on completed repairs

Owner-Operated • Practical Pricing • 1-Year Warranty • Nationwide Service

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