Mitsubishi MDS-B-CV-370 Power Supply Repair Service

Professional diagnostic and board-level repair service for this Mitsubishi MDS-B-CV-370 Power Supply.

The Mitsubishi MDS‑B‑CV‑370 is a high‑power AC converter/UPS used as the main power supply for MDS servo drives in CNC machines, rated at 37 kW with a 270–311 V input range and built‑in IPM protection. Common failure modes include overheating of the transformer or rectifier diodes, degradation of electrolytic capacitors on the output side, and loss of output voltage due to a failing internal regulator or shorted bridge. First‑check diagnostics: verify incoming AC voltage and phase balance; measure DC bus voltage for proper regulation; inspect the unit for heat buildup, bulging capacitors, or burnt components; and review any error codes from the connected drive or PLC. Post Comment

Need your Mitsubishi MDS-B-CV-370 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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