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Get your free estimateLinear Gate Repair in San Francisco: What to Know First
Linear gate repair in San Francisco typically runs $180 to $640 depending on whether the problem is the control board, the actuator arm, a limit switch, or the gate hardware itself. Most Linear repairs get done in a single visit because the gear inside these operators is straightforward to diagnose once you know the failure patterns. We’re an independent Linear service provider, not a manufacturer affiliate, which means we fix what’s actually broken instead of selling you a replacement you don’t need. If your Linear gate is stuck open, refusing to close, or making a sound it never made before, call (628) 227-2771 and we’ll give you a straight answer and a written price before any work starts.
How Linear Products Fail – and How We Fix Them
Linear operators, particularly the LDO50, the PRO-SWL and PRO-DXL swing-arm series, and the older APeX actuators, fail in predictable ways that differ from other brands. We see the same few issues across every San Francisco neighborhood, from Outer Richmond to Excelsior, because the failure modes are baked into the design and the salt air does the rest. Here’s what actually goes wrong:
- LDO50 limit-switch drift on heavy gates. The LDO50 is a light-duty swing operator, but a lot of San Francisco homes hang a heavy cedar or wrought-iron gate on it. Over time, the plastic cam that trips the limit switch wears and the gate starts stopping two inches short of closed, or slamming into the post. The real fix is replacing the cam and re-setting the limits, not cranking the torque higher. We see this on maybe a quarter of all LDO50 calls; the gate’s fine, the cam just gave up.
- APeX 24V motherboard relay burnout. The APeX series was discontinued years ago, but it’s still on hundreds of San Francisco gates. Its known weak point is the relay that drives the motor. When it arcs enough, the operator goes completely dead with no warning light. Our fix is to replace the relay on the board rather than scrap the whole operator. It takes a soldering station and about forty minutes, and it works as long as the transformer tests clean.
- PRO-SWL arm bracket cracking at the weld. The PRO-SWL is a workhorse, but the L-shaped bracket that bolts the actuator arm to the gate corrodes at the weld point after a few winters of fog and salt air. In neighborhoods like Outer Sunset and Daly City-adjacent blocks, we find hairline cracks that make the gate shudder or jerk at mid-travel. We repair or replace the bracket and re-align the arm so the pivot point stops flexing.
- Interference from new LED landscape lighting. Linear’s receiver boards, especially the older M3 and the multi-code receivers on early PRO-series units, are sensitive to electromagnetic noise. Homeowners in neighborhoods like Forest Hill often call us after a landscape lighting upgrade because the gate suddenly only opens from six feet away, or not at all. The fix is usually a ferrite choke on the receiver input and a channel change on the remote, not a new motor, not a new board, not a major repair.
- Corroded control-board terminals on unsealed enclosures. Linear boxes aren’t always weather-tight by design. We regularly open enclosures in Glen Park and the Portola to find green corrosion creeping up the bottom row of terminals, usually the 24V accessory and photo-eye connections. That corrosion causes intermittent stop-and-reverse behavior. We clean the terminals, reseat every connection, and seal the enclosure with a gasket. It’s the kind of fix that doesn’t show up in a manual.
Styles & brands we work with
Our Linear Gate Repair Process
Every Linear job starts the same way: you call, a person answers, we schedule a window that works around nap time if quiet matters, and the technician arrives in uniform with shoe covers and drop cloths in the truck. From there, here’s how the actual repair goes:
- 1
Listen and test. The tech asks what you noticed first and when, then runs the operator through two full open-close cycles, listening for changes in motor pitch and watching for torque behavior.
- 2
Open the enclosure. We check the control board first, looking for arcing marks, corrosion, loose terminals, and any signs of water intrusion from the last storm.
- 3
Test the actuator or arm. We test the motor resistance and the mechanical arm or rail for binding, wear, or a broken gear. On Linear swing arms, we check the bracket weld and the pivot points before we blame the electronics.
- 4
Decision on parts. Where an OEM Linear part is still available and warranty-safe, we use it. Where the operator is discontinued or the OEM part is priced unreasonably, we’ll recommend a quality aftermarket component and tell you the trade-off in plain terms before ordering anything.
- 5
Repair and test. We make the fix, re-set the open and close limits, adjust the force settings for the actual weight of your gate, and test the safety edge and photo eyes if present. The gate should open fully, close fully, and stop when it should.
- 6
Cleanup and the written record. We sweep, we photograph the work area, and you get a photo of the completed repair and the clean space before the tech leaves. The written price was agreed before we started; the invoice matches it.
What Linear Gate Repair Costs in San Francisco
Most Linear gate repairs in San Francisco fall into these ranges, and you’ll see the exact number in writing before we touch anything:
- Limit switch or cam replacement (LDO50, PRO-SWL): $180 to $310
- Control board relay repair (APeX and older PRO units): $260 to $480, depending on the board and whether we can repair it on the bench or need a replacement
- Gate realignment, hinge adjustment, or latch replacement: $220 to $400
- Full actuator or arm replacement with new brackets: $480 to $640
- Receiver noise or channel rework after lighting changes: $120 to $200
The price moves based on how hard the gate is to access, whether the existing hardware is still square, and whether OEM parts are available. Every estimate includes the written price, the shoe covers, the drop cloths, and the cleanup photo, so there’s no add-on waiting at the end. Call (628) 227-2771 for a free estimate on your specific operator.
See the difference
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After
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AfterWhy San Francisco Homeowners Call Latch and Post Gate Repair San Francisco for Linear Work
We’re one part of the Cedarwell family, and we’ve been at this since 2009, but what actually gets us called back is simpler than that. Our techs know Linear’s specific failure patterns, so the right fix happens on the first visit instead of the third. We work on the other brands San Francisco homes actually have too – LiftMaster, Mighty Mule, Ghost Controls, DoorKing – which means when a property has a Linear operator on the driveway and a Mighty Mule on the pedestrian gate, one technician can fix both in one visit. Every repair is covered by the 365-Day Done Right Promise: if it isn’t right, we make it right, no argument and no fine print. And every call is answered by a live person, 24 hours a day, 7 days a week, even on a foggy Tuesday at 3 in the morning.
Our founder, Cody Beckman, spent the better part of two decades working through nearly every gate configuration the Bay Area throws at people. He’s the one who insists on the extra ten minutes to explain what caused the problem, not just what he fixed, so the same issue doesn’t show up again in eighteen months. A gate that opens quietly and closes all the way is one of those things you stop noticing – and that’s exactly the point.
FAQs
In most cases, no. As an independent Linear service provider, we perform repairs using workmanship that doesn’t invalidate whatever warranty remains on your operator. If your Linear unit is still under warranty, we’ll tell you upfront whether the repair is best handled through the warranty channel or through us, and we’ll never hide that information to keep the job.
Yes, in many cases. Linear discontinued the APeX line years ago, but many of its internal components, relays, limit assemblies, and even complete actuators, are still available through our parts network or as quality aftermarket replacements. The question isn’t usually whether a part exists; it’s whether the replacement cost still makes sense for an operator with other wear. We’ll give you that math honestly before any order goes in.
Most Linear repairs are completed within 24 to 48 hours of your call, depending on part availability and where the job falls in the schedule. If your gate is stuck open, stuck shut, or blocking a driveway, tell the person who answers, and we’ll work the schedule to get someone out quickly. Every call is answered live, around the clock.
The decision comes down to three things: the condition of the internal board, the condition of the mechanical arm or rail, and the total repair cost relative to the cost of a new unit. If the repair is under half the cost of a comparable replacement and the rest of the unit tests clean, we’ll recommend repairing it. If the board, transformer, and arm are all compromised, we’ll tell you that replacement is the better long-term move, and we’ll give you a written price for both options before any work starts.
Yes. Linear operators commonly use retro-reflective photo eyes and, on some installations, an electric safety edge on the gate itself. We test both every time, and if they’re misaligned, corroded, or not functioning, we include the repair or replacement in the written estimate. A working Linear gate is one that stops and reverses when it meets an obstruction, not just one that opens and closes.
Call Latch and Post Gate Repair San Francisco for Linear Gate Repair
If your Linear gate is sticking, stopping short, dead silent, or running when it shouldn’t, call (628) 227-2771. A live person answers, you’ll get a straight answer about what’s happening, and we’ll give you a written price before any work begins. We serve single-family homes, small multi-unit buildings, and properties with paired operators on driveway and pedestrian gates across San Francisco, from the Richmond to the Mission. Shoe covers and drop cloths go in with every visit, and we photograph the clean-up before we leave. It’s the way gate repair should work.
Written by Cody Beckman, Owner, Latch and Post Gate Repair San Francisco at Latch and Post Gate Repair San Francisco, serving San Francisco and nearby areas.