Control board repair · mail-in from any state
Component-level control board repair for commercial equipment.
Most failures are power supply components, relays, or connectors — not the microcontroller. That is why a board the OEM wants $1,200–8,000 to replace usually comes back for 10–25% of that — and comes back this week instead of next quarter. Pull the board and ship it in from anywhere in the United States.
Mail-in HVAC, refrigeration and ice machine board repair, plus restaurant, agricultural, and industrial controls.
$85
Bench diagnosis
Credited when you approve the repair.
$250–650
Typical repair
Quoted after diagnosis, before any work.
1–3 business days
Standard turnaround
24-hour rush available at +50%.
90 days
Warranty
Same fault returns, the repair is free.
Process
How a repair runs
Six steps, no surprises. You approve a written price before anything is soldered.
- 01
Send it in
Pull the board, note the equipment make and model, and write down what the machine was doing when it failed. Email for an RMA number, then ship it. No appointment, no account required.
- 02
Bench diagnosis
The board goes on the bench and gets powered up under load. Diagnosis is $85 flat, and it comes off the invoice the moment you approve the repair — so an approved job costs you nothing extra to have diagnosed. Trade accounts are never charged for it.
- 03
Written quote
You get the failure cause, the parts needed, the price, and the turnaround in writing. Nothing is soldered until you say yes. If the board is not worth repairing, you hear that instead — and you owe the diagnosis fee only.
- 04
Repair
Component-level work: failed relays, dead switching supplies, burnt traces, cracked solder joints, blown drivers, corroded connectors. Standard turnaround is 1–3 business days on the bench. A 24-hour rush is available at +50%.
- 05
90-day warranty
Every repaired board carries a 90-day warranty. If the same fault comes back inside that window, the repair is free. Not prorated, not a credit — the same repair, again, at no charge.
- 06
Return ship
The board ships back the day it passes test, billed at cost with no handling markup. Tracking goes out by email as soon as the label is printed.
Rates
Repair rates
Published prices. Anything outside this table is quoted in writing before work starts.
| Service | Rate |
|---|---|
| Bench diagnosisWaived if you approve the repair. Always free on a trade account. | $85 flat |
| Standard repair1–3 business days. Quoted after diagnosis. | $250–650 typical |
| Complex / multi-fault repair | Quoted, $125/hr basis |
| Rush turnaround (24 hr) | +50% |
| Return shipping | At cost |
| No-fault-found / unrepairable | Diagnosis fee only |
90-day warranty on all repaired boards. If the same fault returns, the repair is free.
For HVAC, refrigeration, restaurant service, and ag equipment contractors: diagnosis is always free, repairs are billed at a 20% trade discount, and Net 30 after first invoice terms are available. Send the boards you have been writing off.
Rates effective 2026 and subject to change on new quotes only.
Mail-in
Shipping a board in
Contractors ship boards here from any state. Most of what arrives damaged was packed loose in a box that was too big.
Before you ship
Email for an RMA number before shipping. Write it on the outside of the box and on a slip inside.
Bag the board in antistatic material. Bubble wrap alone is not antistatic and can hold enough charge to finish off a marginal part.
Immobilize it inside the carton. A board that can slide will arrive with cracked solder joints that were not there when it left.
Include the equipment make, model, and serial, plus a one-line symptom description. "No heat, no display, breaker holds" is worth more than a page of history.
Send the whole assembly if the board is attached to a heat sink, a transformer, or a wiring harness you cannot cleanly separate.
Do not send the entire unit. Boards only — there is no room on the bench for a rooftop unit.
Ship to
System Voidz — Repair IntakePO Box 33 (USPS)413 Railroad Ave (UPS, FedEx)Watrous, NM 87753Use the PO Box for USPS and the street address for UPS or FedEx — a PO Box cannot accept courier deliveries.
RMA requests
Book the board in and an RMA number comes back the same business day. The form asks for everything needed to quote it, so there is no back-and-forth first.
Book a board inOr email support@systemvoidz.com
Questions
(505) 309-0534Mon–Fri, 8:00–17:00 Mountain
Equipment served
What comes across the bench
Commercial equipment only. If your category is not listed, send the part number and ask.
Commercial refrigeration and ice machines
Reach-ins, prep tables, display cases, walk-ins, condensing units
HVAC and rooftop units
Control boards, defrost boards, ignition modules, thermostats
Restaurant equipment
Ovens, fryers, ranges, proofers, holding cabinets, dishwashers
Well pumps, irrigation, and pivot controllers
Pump controls, pressure and level sensing, pivot panels
Agricultural implement electronics
Monitors, display heads, harness and controller faults
Shop and industrial machinery
PLC I/O cards, power supplies, HMI and operator panels
Gym and fitness equipment
Console boards, drive controllers, resistance and sensor faults
Motor drives and VFDs
Drive boards, gate drivers, DC bus and power stages
Categories served: Commercial refrigeration and ice machines, HVAC and rooftop units, Restaurant equipment, Well pumps, irrigation, and pivot controllers, Agricultural implement electronics, Shop and industrial machinery, Gym and fitness equipment, Motor drives and VFDs.
Symptoms
What the board is doing when it gets sent in
If any of this sounds like the unit in front of you, the board is worth putting on the bench. None of it means the board is definitely repairable — that is what the diagnosis answers.
- Board is completely dead — no display, no LEDs, nothing on power-up
- Fuse blows the moment the unit is energised
- Visible burn mark, scorched trace, or a component that has let go
- Relays chattering, or clicking without the load ever pulling in
- Unit locks out on an error code and will not clear on a reset
- Intermittent — works cold, drops out once the cabinet warms up
- Display lit but frozen, garbled, or missing segments
- Compressor or fan never commanded on, with good inputs at the board
- Defrost cycle never initiates or never terminates
- Board was hit by a surge, a lightning strike, or a flooded condenser
- Water, oil, or refrigerant contamination on the board
- Replacement board is discontinued, backordered, or on months of lead time
Fault patterns worth reading before you ship
- Control Board Dead After a Power Surge or OutageWhat to rule out first, and what actually implicates the board.
- Board Works Cold and Fails Once It Is HotWhat to rule out first, and what actually implicates the board.
- Walk-In Cooler Not Defrosting, or Icing OverWhat to rule out first, and what actually implicates the board.
- Ice Machine Display Dead or Showing NothingWhat to rule out first, and what actually implicates the board.
- Rooftop Unit or Furnace Locked OutWhat to rule out first, and what actually implicates the board.
The most common reason a board reaches us is that the replacement is discontinued, backordered, or costs more than the equipment is worth. If you have been quoted a lead time in months, send the part number and ask.
Questions
Before you ship
What if it cannot be fixed?
You pay the $85 diagnosis fee and nothing else. A no-fault-found board — one that tests clean on the bench — is billed the same way.
Boards get declined when the failure is a discontinued custom ASIC, when the damage has destroyed too much of the board itself, or when the repair would cost more than a replacement. In that last case you will hear it as a recommendation to buy new, with the reason.
How long does a repair take?
Standard bench turnaround is 1–3 business days from the day the board arrives, plus transit each way. A 24-hour rush is available at +50% of the repair price.
Turnaround is bench time. If a repair needs a part that is not in stock, you are told the lead time in the quote before you approve anything.
What does the warranty actually cover?
90-day warranty on all repaired boards. If the same fault returns, the repair is free.
It covers the fault that was repaired. It does not cover a new, unrelated failure on the same board, or damage from the underlying condition that killed the board in the first place — a failing compressor that takes out a second driver stage is a new repair.
Do you repair consumer electronics?
Some. Appliance control boards and game consoles are repaired mail-in, flat-rate, under residential. Televisions, phones, laptops, and tablets are not.
The line is not about difficulty. A board in a television or a phone is built to be replaced rather than serviced, parts are locked to the device, and the economics almost never work out in the customer’s favor. An oven control board or a console HDMI port is the opposite: a known fault on a serviceable board, for a fraction of what the replacement costs.
Do I need to send the whole unit?
No — boards only. Pull the board and ship it. If it is mechanically bonded to a heat sink, transformer, or harness you cannot cleanly separate, send that whole assembly.
How does payment work?
Payment is due on completion, before the board ships back. Established commercial and trade accounts can run Net 30 after the first invoice.
Get an RMA number and ship it this week.
Send the equipment make, model, and what it was doing when it quit. You will have an RMA number and a realistic expectation the same business day.