Lyman MK-7 Power Feed Repair Service

Professional diagnostic and board-level repair service for this Lyman MK-7 Power Feed.

The Lyman MK‑7 Power Feed is a 120 V AC motor drive used to provide table and column feed for Bridgeport‑style milling machines. Common failures include an internal fuse or circuit breaker tripping, a defective main power relay, or a burnt‑out rectifier bridge that prevents the indicator lamp from lighting when the switch is turned on. First‑check diagnostics: verify 120 V supply to the unit and confirm the on/off switch is functioning; inspect the main fuse and any internal fuses for continuity; visually examine the power board for burn marks or damaged components, then test the relay contacts with a multimeter for proper operation. Post Comment

Need your Lyman MK-7 Power Feed 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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