Wrought iron
Wood & steel frame
Farm & ranch
Sliding driveway gates
LiftMaster operatorsFree on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Get your free estimateMighty Mule Gate Repair in San Jose, CA | Calder Gate Repair San Jose
We’re Calder Gate Repair in San Jose, an independent Mighty Mule service team working driveways from Willow Glen to Almaden Valley. Most Mighty Mule repairs in San Jose run between $165 and $390 before parts, and our techs arrive with OEM boards and remotes already on the truck. What makes us different here: we know how San Jose’s hard water and foggy mornings chew through limit switches and hinge brackets on the vintage gates this city is full of. Call (669) 666-6859 for a straight answer and a free estimate.
Why San Jose Residents Choose Us for Mighty Mule Service
Nico Alvarez, our owner and lead gate technician, cut his teeth on automated access systems through the trade programs at Los Angeles Trade-Technical College before spending years on real residential and commercial jobs. His crew has been fixing Mighty Mule operators across San Jose long enough to know which failures are climate-driven and which are just old age. We stock OEM Mighty Mule circuit boards, remotes, and control arms locally, so a typical board swap doesn’t wait on a parts shipment from Georgia. Our Mighty Mule sales & service work covers everything from dead FM200 gate openers on post-war ranch homes to MM571W units retrofitted onto 1920s wrought-iron pedestrian gates in Willow Glen. Every technician is background-checked, uniformed, and dispatched with a live arrival time you can track from your phone.
Styles & brands we work with





Common Mighty Mule Gate Repair Problems We Solve in San Jose
- Control board failure after winter storms. The MM371W and MM571W boards are sensitive to power surges, and San Jose’s winter rainstorms rolling off the Santa Cruz Mountains are a consistent culprit. Your gate goes dead, the remote does nothing, and the fix is a board swap with an OEM part calibrated to your opener’s sensitivity settings.
- Stripped plastic gears inside the arm. When a wood gate swells after rain and binds against the post, the arm keeps pushing until the internal gears strip. We see this a lot on 1960s ranch homes where the side-yard gate hasn’t been re-hung in decades. The repair is gear replacement plus a hinge adjustment so it doesn’t happen again next winter.
- Corroded limit switch contacts. San Jose’s damp, foggy mornings put moisture on limit switch terminals, and after a few seasons they corrode enough to send bad signals. Your gate stops mid-travel or reverses for no reason. We clean or replace the switch and seal the housing properly.
- Dead transformer or degraded wire connections. Heat and oxidation along the low-voltage run cause intermittent motor hum without movement. We trace the wire, repair or replace the transformer, and re-make the connections with weatherproof splices that hold up to San Jose summers.
- Worn hinge brackets and sagging gates. The original hollow-steel and wood gates on 1950s-70s ranch homes in San Jose have hardware that’s been corroded by hard water for forty-plus years. A sagging gate puts load on the Mighty Mule arm and burns out motors faster than anything else we see.
Mighty Mule Service in San Jose: What Local Conditions Mean for Your Equipment
Head out to Willow Glen and you’ll find 1920s and 30s Spanish-style homes with original wrought-iron gates that often got Mighty Mule operators bolted on in the 1990s. The hand-forged hinges on those gates are no longer manufactured, and San Jose’s hard water has spent decades working on whatever’s left of them. When a hinge wears, the gate sags, the opener binds, and the plastic gears inside the arm strip. National repair guides tell you to replace the hinge. You can’t. We regularly custom-machine hinge brackets and bronze bushings on site, because replacement parts for that vintage ironwork simply don’t exist anymore. In one Willow Glen job, the control board on an MM371W had fried after a winter surge, but the real problem was the sag: the gate had been binding so long the new board would have failed within a year. We machined new bronze hinge sleeves on a portable lathe, replaced the board with OEM, and restored smooth automated swing without touching a single inch of the original iron. That’s not something a national Mighty Mule guide can walk you through.
Mighty Mule Models & Products We Service in San Jose
We service the full Mighty Mule lineup found on San Jose properties: the MM371W and MM571W single and dual gate openers, the MM562 heavy-duty swing arm, and the FM200 Electric Gate Repair in San Jose slide gate operator. For boards and remotes, we insist on OEM because aftermarket boards often lack the sensitivity calibration that keeps a Mighty Mule from slamming a gate into a child or a car. For mechanical parts like gears, hinges, and post brackets, we source high-quality aftermarket components or machine our own when OEM is discontinued, which it often is for the 1990s-era units still running all over this city. We’ll also tell you straight when a new operator makes more sense than a second or third board replacement on a 15-year-old arm.
See the difference
Before
After
Before
After
Before
AfterMighty Mule Service Pricing in San Jose
Most Mighty Mule gate opener repairs in San Jose run between $165 and $390 before parts. A control board replacement on an MM371W or MM571W typically lands in the $180 to $340 range depending on the board revision, and a full arm swap can push higher when the gears have stripped and the hinge work is extensive. What drives cost here is whether the underlying gate is binding, because a sagging hinge will kill a new board the same way it killed the old one. Every job gets a written price before any work starts, quoted and agreed at the door. Estimates are free. Call (669) 666-6859 and Nico will walk you through what your opener needs and what it costs.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Mighty Mule Gate Repair in San Jose
Wood gates swell after San Jose’s winter rains and bind against the post, which overloads the Mighty Mule arm and either trips the opener’s safety or strips the internal gears. The fix is usually a hinge adjustment paired with any needed gear replacement. Call (669) 666-6859 and we’ll diagnose it over the phone.
Yes. We machine custom bronze hinge sleeves and brackets on site so the original wrought-iron work stays untouched. The Mighty Mule opener gets repaired or tuned around the existing hinge geometry, not by cutting or welding on the antique iron.
Usually the board’s relay is clicking but the power output to the motor is compromised, or the motor’s capacitor has failed. We bench-test the board, check the low-voltage run, and tell you exactly which part is bad before touching anything. Written price first, always.
It’s real. Hard water mineral deposits accumulate on limit switch contacts and wire terminals, especially in neighborhoods that get morning fog off the Santa Cruz Mountains. The corrosion causes false limit readings, so gates stop mid-travel or reverse unexpectedly. We seal the switches and re-make the connections with weatherproof splices as part of the repair.
You don’t need a full replacement. The MM371W supports an external battery backup kit, and we can retrofit one without swapping the operator. It’s worth doing on a gate you rely on during PG&E outage windows. Call (669) 666-6859 for an installed price.
Service Areas Near San Jose
Our crews cover San Jose and the surrounding South Bay cities including Los Gatos, Sunnyvale, Cupertino, Milpitas, and Redwood City. For Mighty Mule service in Los Gatos or Mighty Mule service in Sunnyvale, we schedule dedicated routes weekly. You can also read more about our full San Jose service area.
Book Your Mighty Mule Service in San Jose Today
Your Mighty Mule gate opener isn’t going to fix itself, and San Jose’s winter rains will expose every weak hinge and corroded switch on your property. Call (669) 666-6859 for a free estimate and a repair time that works around your schedule. Same-day appointments are available for dead openers.
Written by Nico Alvarez, Owner & Lead Gate Technician at Calder Gate Repair San Jose, serving San Jose since 2009.