FANUC
FANUC Power Supply Module Repair (PSM / PSU — A06B-6077 / 6087 / 6110 / 6120) — Mail-In
Component-level repair for FANUC power supply modules feeding alpha/alpha i servo systems. Rectifier bridges, bus capacitors, and control supplies are the classic failures. Free evaluation, typical repairs $500–$1,200.
Coverage: PSM series — A06B-6077, A06B-6087, A06B-6110, A06B-6120 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
- ✓PSM alarm LEDs / no ready signal
- ✓Whole servo system dead
- ✓Trips main breaker on power-up
- ✓Intermittent bus undervoltage faults
Honest limits
- ✕Incoming 3-phase supply problems at the machine (we'll tell you what to check)
What you get
- ▸Free bench evaluation and firm quote
- ▸Rectifier and precharge repair
- ▸DC bus capacitor bank replacement
- ▸Control power-supply repair
- ▸Fan replacement, full recap
- ▸24-month warranty
Common part numbers we see
Part-number pages for this service
What to ship
- ▸The PSM only
- ▸Alarm/LED state + 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
My whole FANUC servo rack is dead — amp or PSM?
When every axis is down at once, the shared PSM is the first suspect. Its LEDs (or lack of them) usually tell the story. Send the PSM first — it is the common single point of failure, and the evaluation is free.
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