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AfterLinear Gate Motor Replacement: The Los Angeles Owner’s Guide
A Linear gate motor replacement in Los Angeles typically runs between $850 and $1,400 installed, including the new operator, mounting hardware, and labor. We stock Linear-compatible arms and control boards on our trucks, so most swaps happen same day. If your gate stopped mid-open, makes a grinding sound but won’t move, or the opener hums without engaging, the motor assembly or its control board has likely reached the end of its run.
Most Los Angeles homeowners discover the problem in the worst possible moment: the gate opens halfway at 6:45 a.m., refuses to close, and the kids are already late for school. Linear operators are built well, but Southern California heat and gate weight take a toll. The good news is that a motor replacement is usually a one-visit job, and you’ll know the exact price before we touch anything.
Which Linear Models This Applies To
Linear makes two operator families that dominate residential gates in Los Angeles. The first is the LS line, most commonly the light-duty LSO and the mid-duty LS/LS. The second is the Swing Gate (SG/SDA/SWA) series, which covers square-tube swing arms and planetary drivetrains. Your exact unit will have a label inside the cover or on the chassis with the model number printed plain, like “LS-LSO 1/2HP” or “SG3000”.
Some Linear models share motor and gearbox internals across sub-models, which means a parts number starting with APe or OPe can sometimes fit multiple units. That’s worth knowing because a shop that isn’t Linear-aware will sell you the entire operator when a $200 internal component would resolve the issue. We don’t take that route. We match parts by model, not by guess.
OEM Linear parts exist, and we use them when the unit is still in production. For discontinued models, quality aftermarket equivalents from Mighty Mule and LiftMaster-compatible stock often match Linear bolt patterns and shaft dimensions. If we use a non-Linear part, we’ll tell you before the work starts and explain why, and the written price will reflect exactly what’s going in.
Signs Your Linear Gate Motor Replacement Is Failing
- The motor hums but the gate doesn’t move. This almost always means the capacitor has lost its ability to kick the motor into rotation. In Los Angeles, capacitors degrade faster with summer heat soak. A new capacitor sometimes fixes it. A seized gearbox does not.
- The gate opens halfway and stops. The limit switch or the internal travel sensor has drifted. On Linear swing operators, this often gets misdiagnosed as a motor problem. The board remembers where “open” is, and when that memory degrades, the gate stops short.
- Grinding noise from the gearbox or arm. The planetary gears in Linear SG series units wear unevenly, especially on gates that were never re-balanced after a hinge sag. Once metal shavings appear in the grease, the motor is fighting itself, and replacement is cheaper than a rebuild.
- Intermittent operation, especially after rain. Los Angeles gets a few real downpours each winter. Moisture entry into the control board through degraded seals causes exactly this pattern. The motor may be fine. The board isn’t.
- Remote range collapses to a few feet. This points to the receiver board, often mounted next to the motor itself. Components age under direct sun exposure, and in Los Angeles, that means a three-year lifespan is common for an unshaded unit.
Replacement Cost & What’s Included
Los Angeles pricing for a full Linear motor replacement splits into the operator itself, the mounting hardware and any required bracket fabrication, and the labor to remove the old unit, install the new one, set travel limits, and test under load. Most complete replacements run $850 to $1,400 installed. The low end covers lighter swing arms on simple single gates. The high end covers dual gates, heavier sliding drives, or units that need new steel brackets welded or bolted into place.
If only the control board or the capacitor has failed, you’re likely looking at $160 to $320 installed, which is a very different conversation than a full motor. That’s why we diagnose before we quote. You’ll receive a written price before any work begins, and the number we quote is the number on the invoice. The installation carries the full 365-Day Done Right Promise – if it isn’t right, we make it right, no fine print.
DIY or Call Us?
You can check three things safely. First, is the breaker for the gate circuit on? Second, are the photo eye lenses clean and aligned? A dirty eye stops the gate every time. Third, disconnect the operator arm and push the gate by hand to see if it moves freely. If the gate itself is stiff, the motor was working against a failing hinge or post, and no new motor will fix that.
The electrical side is where DIY stops making sense. Linear operators carry live voltage even when the gate is in “manual” mode, and the capacitor stores enough charge to hurt you well after power is cut. A motor swap also means setting limit switches correctly, and an improperly set limit will burn out a brand-new operator within months. We’re happy to do the whole job – and we’ll show you exactly what we did before we leave. Call (626) 649-4572 and you’ll get a real person, not a voicemail.
FAQs
A properly installed and balanced Linear gate operator lasts 8 to 12 years in the Los Angeles climate, with capacitors and limit switches often needing attention around year 6. Coastal salt air in Venice or Playa del Rey can shorten that by two or three years due to corrosion on the board and terminals. The best way to extend lifespan is to fix hinge sags and post drift early, because the motor works hardest against a gate that no longer swings true. Call (626) 649-4572 and we’ll inspect the whole system, not just the motor.
Sometimes, yes. If the capacitor, limit switch, or control board is the failure point, replacement of that one component often brings the operator back to reliable service for a fraction of full replacement cost. We’ll always repair when it makes honest sense. If the gearbox internals are ground down or the arm’s output shaft is chewed, replacement is the only fix that won’t strand you again in six months. You’ll see our recommendation in writing, with the reasoning, before you approve anything.
A standard single-gate Linear motor replacement takes 60 to 90 minutes once the technician is on site, assuming the existing brackets and post are in usable condition. Dual gates or units that require new steel work can run 2 to 3 hours. You’ll know before we start, and we’ll leave the same day the job begins.
We carry Linear-compatible control boards, capacitors, remote receivers, and full operator units for the most common LS and SG series models on our trucks, so most Los Angeles replacements happen on the first visit. For less common or discontinued models, we can usually source parts by the next business day. We’ll confirm stock when you call, and if we have to order, you’ll know the timeline before you commit to anything.
The gate should open quietly and close all the way. That’s really the whole job. Cody Beckman, who owns Latch & Post Gate Repair, grew up in the Palms neighborhood of Los Angeles and studied welding at Los Angeles Trade-Technical College downtown, and he’s been working gates on the Westside and into the Valley for the better part of two decades. He’s the person neighbors call when a Linear operator quits mid-cycle.
If your Linear gate motor is failing, call (626) 649-4572 for a free estimate. We’ll give you a straight diagnosis, a written price, and a date that works around nap time if needed. Our technicians wear shoe covers inside your home, lay down drop cloths, and send you a photo of the clean-up before they leave. No voicemail. No pressure. Just the right fix, done right, backed for a full year.
Written by Cody Beckman, Owner, Latch & Post Gate Repair at Latch & Post Gate Repair, serving Los Angeles and nearby areas.