HAAS® Servo Amplifier Exchange & Repair
Break down today. Make it work again tomorrow.
We lend you a working servo amp within 24 hours, fit it and prove the machine. You keep the loaner while we repair or replace yours — fixed pricing, same warranty as new.
What the servo amp does
Each linear axis has its own brushless servo amplifier that turns commands from the MOCON into current for the axis motor. On most VF machines the X, Y and Z amps are the same part, which is exactly why a single loaner covers most call-outs — we can swap it into whichever position has failed.
Signs it has failed
- One axis dead while the others move normally
- Alarm 108 / 109 / 110 SERVO OVERLOAD on a single axis, especially at power-up
- Alarm 102 SERVOS OFF that returns straight after reset
- Axis moves but with a following-error alarm the moment it’s loaded
- Amplifier fault LED lit, or an amp that is noticeably hotter than its neighbours
Related alarm codes
If one of these is on your screen, this is likely the part — each links to our plain-English guide.
Why they fail
Servo amps see thousands of current cycles a day. Output transistors fail after years of heavy roughing, the on-board electrolytics dry out, and coolant mist that finds its way into the cabinet does the rest. A failing amp often looks like a mechanical problem first — we’ll check the axis moves freely by hand before condemning the electronics.
Part numbers we cover
How Exchange & Repair works
- You call, we quote on the spot. Phone diagnosis to confirm the failed part. We tell you honestly whether we hold that unit, the fixed swap-in fee, and the fixed replacement price if yours can’t be repaired.
- We bring the part within 24 hours. An engineer arrives with the loaner, fits it, proves the machine and takes your original away. You’re cutting again the same day.
- You keep the loaner while we repair yours. Proper diagnosis at the bench, no time pressure. If we repair it, we swap back at your next service. If we can’t, you keep the loaner and pay the fixed replacement price you were quoted on day one.
Fixed pricing
One fixed swap-in fee plus a fixed price list for every replacement part, sent to you the moment you call. No hidden costs. If we repair your original, that’s all you pay.
Same warranty as a new HAAS® part
Every part we exchange carries the warranty HAAS Automation, Inc. gives on the equivalent new component — parts and labour, in writing, from the day we fit it.
A note on this guide. Symptoms and part numbers vary by HAAS® machine model and software revision. This guide is written to help you narrow down a fault and understand your options — it is not a substitute for a qualified engineer’s diagnosis. HAAS® is a registered trademark of Haas Automation, Inc. Squidex Solutions Ltd is an independent service provider.