FANUC
FANUC Spindle Amplifier / Drive Repair (A06B-6078 / 6088 / 6111 / 6121) — Mail-In
Component-level repair for FANUC spindle amplifiers (SPM series: A06B-6078, -6088, -6111, -6121 and related). Free evaluation, firm quote before work, typical repairs $750–$1,800.
Coverage: Alpha SPM (A06B-6078 / 6088) · Alpha i SPM (A06B-6111) · Beta i (A06B-6121) and related
✓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
Symptoms this repair fixes
- ✓Spindle alarms (AL-01, AL-02, AL-12 class faults)
- ✓Dead spindle drive
- ✓Trips on acceleration or under load
- ✓Blown input stage after a phase event
Honest limits
- ✕Failures in the spindle motor itself or magnetic sensor (identified honestly at evaluation)
What you get
- ▸Free bench evaluation and firm quote
- ▸IGBT / power-stage replacement
- ▸Gate-driver, bus, and control-supply repair
- ▸Fan replacement and thermal verification
- ▸Full recap as standard
- ▸24-month warranty
Your program is safe
Drive parameters live in the CNC — reinstalling a repaired spindle amp rarely requires reprogramming.
Common part numbers we see
Part-number pages for this service
What to ship
- ▸The spindle amplifier module only
- ▸Alarm number + machine make/model
Full packing guidance: mail-in instructions.
Ship your unit to
USPS
Control Board Lab
PO Box 120241
Arlington, TX 76012
UPS / FedEx
Control Board Lab
1009 Oakwood Ln # 120241
Arlington, TX 76012
Write your RMA number on the outside of the box and include it on a note inside. Units over 50 lb (large VFDs, spindle drives, industrial PCs in enclosures) ship by freight — contact us before ordering and we will arrange dock-to-dock shipping.
Frequently asked questions
The machine shows a spindle alarm only under load — worth sending the amp?
Load-dependent trips are commonly failing power stages or aged bus capacitors inside the amplifier — both repairable. Send the alarm number with the unit; if evaluation shows the amp is healthy, you pay nothing and can chase the motor side with confidence.
Start with a free evaluation
Ship it in, get a firm quote, approve before any work — pay nothing if it can't be repaired.
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