CNC Control Repair
CNC control, spindle and servo amplifier repair for machine tools
- Free evaluation
- 24–72 hr typical
- 12-month warranty
- Tested on our jigs
Short answer
Can a CNC control be repaired?
Yes. CNC controls, operator panels, spindle and servo amplifiers, boards and power supplies can usually be repaired at component level, including older controls the manufacturer no longer supports. We find the root cause, repair the failed parts and test the unit under power before it ships back with a test report and a 12-month warranty.
What we repair
What we repair on a CNC control
CNC controls & NCUs
Control units and processor boards that will not boot, alarm or lock up.
Operator panels & monitors
Machine operator panels, displays, keyboards and PCUs.
Spindle amplifiers
Spindle amplifier power stages and control boards.
Servo amplifiers
Axis amplifier modules with overcurrent, IPM and feedback faults.
Power supply modules
CNC supply and line modules behind DC link and undervoltage alarms.
I/O & interface boards
Machine I/O, axis interface and communication boards.
Diagnosis guide
Common CNC control faults we fix
Servo amplifier IPM or overcurrent alarm
Failed power module, gate driver or a motor and cable fault
Spindle amplifier DC link or IPM alarm
Failed spindle power stage, DC link components or supply module
Control will not boot or stops at startup
Processor board, memory, battery backup or power supply fault
Operator panel or screen dead
Display, backlight, PCU or panel power supply failure
Quality
How we test every repaired CNC control
Parts replaced is not the same as fixed. Every unit is proven under power before it leaves our Mississauga, Ontario repair centre.
- 01
Photos and condition report on arrival
- 02
Root cause found before we quote
- 03
Powered up and tested on our test jigs
- 04
Test report ships with every unit
All makes & models
We repair every CNC control brand
We repair CNC controls from any manufacturer, current or obsolete. These are some of the brands and series we see most often. If yours isn't listed, we still repair it.
Fanuc
- Series 0i
- 16i / 18i / 21i
- 30i / 31i
- αi amplifiers
Siemens
- SINUMERIK 840C
- SINUMERIK 840D
- SINUMERIK 810D
- SINUMERIK 828D
Any brand. Any model.
Heidenhain TNC · Mitsubishi CNC · Okuma · Mazak · 1,000+ brands
Don't see yours? Ask a technician
Brand names are trademarks of their owners and are used only to identify the equipment we repair.
Your options
Repair, exchange or replace?
Repair your unit
Your original unit, repaired at component level and tested. Usually a fraction of the price of new.
Request a RepairExchange unit
A tested replacement at a lower price. Ship us your unit and we ship the replacement once it arrives.
Ask About ExchangeReplacement part
New, surplus or refurbished, sourced from 1,000+ brands, including discontinued parts.
Request a QuoteFAQ
CNC control repair questions
Do you repair older CNC controls like the SINUMERIK 840C?
Yes. We repair older and discontinued CNC controls at component level, so proven machine tools keep running.
Will I lose my machine data or parameters?
Back up your machine data and parameters before you ship any control or board that stores them.
Can a technician come to my machine?
Yes. Our technicians provide on-site service calls across Canada and the United States.
What warranty comes with a CNC repair?
Every CNC repair comes with a 12-month warranty.
CNC control down? Let's get it running again.
Free evaluationNo work without your approval12-month warranty