CNC Control Electronics Repair
Board-level repair for CNC machine electronics — FANUC boards and amplifiers, control power supplies, operator panels, and monitors for Haas, Mazak, Okuma, Fadal, and other machine tools.
CNC electronics get a free bench evaluation with a firm quote. Tell us the machine and alarm code — it speeds up diagnosis.
✓Fixed — or it's free
Unrepairable units are refunded; evaluations cost $0
✓24-month warranty
Every repair covered, parts and labor
✓3–5 business days bench time
Rush (1–2 day) and emergency service available
✓Program preserved
Your application and settings stay in the unit
CNC Electronics repair services
FANUC
Free evaluationFANUC Board Repair (A16B / A20B)
A16B / A20B boards from FANUC controls, power units, and I/O — free evaluation, typical repairs $300–$800.
3–5 business days in lab · Free evaluation →
Multi-brand
Free evaluationCNC Monitor & Display Repair
Dark, shrunken, or dead CNC displays — including CRT-to-LCD conversions that end the problem for good. Free evaluation, typical $350–$750.
3–5 business days in lab · Free evaluation →
What this category covers
- ▸FANUC servo & spindle amplifiers (A06B)
- ▸FANUC PCBs (A16B / A20B)
- ▸CNC power supplies
- ▸Machine operator panels & MDI units
- ▸CNC monitors & displays
- ▸Haas, Mazak, Okuma, Fadal electronics
Failures we see every week
- ▸Servo / spindle alarm codes
- ▸Dead control power supply
- ▸Alarm: low battery / memory loss
- ▸Dead or distorted CRT/LCD monitor
- ▸Operator panel keypad failure
- ▸Board-level component failure
Part numbers in this category
Frequently asked questions
Should I back up my CNC before sending a board?
Yes — always back up parameters and programs before removing any board; that's best practice regardless of repair. If a board carries battery-backed memory, note it on the intake form and we maintain memory power during service wherever the hardware allows.
Can you repair boards FANUC no longer supports?
Legacy-control boards are a specialty. Third-party repair is often the only remaining service path for Series 0/16/18/21-era hardware, and the common failures use components that are still obtainable.
Machine down? Let's get it back up.
Start a repair online in two minutes, or send us the part number for a free technician review.
The Fixed-or-Free Guarantee: if we can't repair it, you don't pay for the repair.
Call (817) 799-7332 · 📱 Text us a photo of your unit · Email repairs@controlboardlab.com