FANUC · A16B / A20B boardsObsolete / discontinued
A16B-1210-0480 Repair
FANUC power unit PCB (A16B-1210-0480). Capacitor aging, battery-leak corrosion, and connector wear are the classic board failures — free evaluation, firm quote.
Known failures on the A16B-1210-0480
- ▸Dead control power
- ▸Capacitor leakage
- ▸Corrosion damage
- ▸Connector wear
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.
Check these before you ship
Some of these will tell you the A16B-1210-0480 is fine and the fault is elsewhere — worth ten minutes before you pay to ship it.
- □Record the full alarm text and number from the control. Machine-tool alarms are specific, and the exact code often identifies the board before it arrives.
- □Note whether the fault is present from cold or only appears once the machine has been running — thermal faults and hard failures are found differently.
- □On a display fault, check for a faint image under a bright light. A visible image means the LCD and video path are alive and the backlight circuit is the fault.
- □If parameters are still readable on the control, record them. Our physical repairs do not erase machine parameters, but a machine tool is not the place to have no record.
Not your exact model?
Search the catalog or send us the number on your unit's label — we service far more than the catalog shows.
How the A16B-1210-0480 differs from the rest of the A16B / A20B boards range
These share an electronics platform and fail in the same ways, but they are not interchangeable — check the number on your unit's label against this list before you ship, and before you buy a replacement.
| Part number | Distinguishing spec | Repair | |
|---|---|---|---|
| A16B-1210-0480 (this page) | A16B / A20B boards | Free evaluation — typical board repairs $300–$800 | |
| A16B-1212-0110 | A16B / A20B boards | Free evaluation — typical board repairs $300–$800 | View → |
Why a A16B-1210-0480 fails — and what we do about it
The A16B / A20B boards shares its electronics across the family, so these are the faults we see on this part number again and again.
Supply rail and capacitor faults
- What you see
- Random alarms, resets that clear on a power cycle, or a control that becomes unreliable once warm.
- Why it happens
- Aging capacitors on the board supply produce marginal rails. On a machine control this presents as exactly the intermittent, wandering faults that are hardest to place on the machine itself.
- What we do
- Capacitors are replaced and rails verified under load with ripple measured, then the board is soak-tested warm.
Battery-backed memory loss
- What you see
- Lost parameters, alarms about memory or battery, or a control that has forgotten its configuration.
- Why it happens
- Battery-backed memory relies on a battery and its retention circuitry, both of which have finite life. Loss of stored parameters on a machine tool is a serious event.
- What we do
- Batteries and retention circuitry are addressed, and we flag anything we find at risk rather than leaving you to discover it later.
Repair or replace a A16B-1210-0480?
Machine-tool electronics are the strongest case for repair anywhere in a plant. Control hardware is expensive, frequently long out of production, and tied to a specific machine by its parameters and configuration — replacing a board can mean a retrofit project rather than a swap. Meanwhile the machine is a large fixed asset producing nothing while it waits. Repair keeps the original control intact and the machine in its known-good, proven state.
Full technical detail for this repair
The FANUC Board Repair (A16B / A20B) service page covers the complete bench sequence — how the unit is tested, what gets replaced and how it is proven before it ships back — along with the rest of the family we service.
FANUC Board Repair (A16B / A20B) — full details →Frequently asked questions
Can the A16B-1210-0480 be repaired?
Yes — dead control power, capacitor leakage, corrosion damage are the failures we commonly repair on the A16B / A20B boards platform. It starts with a free bench evaluation and a firm quote you approve before any work — $0 if unrepairable.
How long does a A16B-1210-0480 repair take?
Standard bench time is 3–5 business days once the unit arrives. Rush service (+$149) moves it to 1–2 business days, and emergency same/next-day attempts are available — contact us first.
How do I send it in?
Start the repair online to get an RMA number instantly, pack the unit well with the RMA on the box, and ship it to our Dallas–Fort Worth lab with any carrier. Full packing guidance is on the mail-in instructions page.
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