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Linear Access Control Installation: The Grand Prairie Owner’s Guide
Linear access control installation in Grand Prairie typically runs $450 to $1,200 installed, depending on whether you need a simple keypad/reader swap or a full system with new wiring and power supply. We stock Linear-compatible parts on our trucks and can usually have a failed reader or keypad working the same day we look at it. The way most folks find us: the keypad stops accepting codes, the card reader flashes but won’t release the gate, or the whole system goes dark after a storm and nobody can get in without the manual key.

If you’re reading this, you probably already know the part number or you’ve got a Linear system that’s acting up and you need to know what’s actually gone wrong before spending money. That’s the right order. Here’s what we’ve learned working on Linear equipment in Grand Prairie since 2001.
Which Linear Models This Applies To
Linear built its reputation on telephone entry and access control systems, and we work on the whole family: the AE series telephone entry units (AE-100, AE-500, AE-1000, AE-2000), the AMKP and IEI keypads, the MGT obstacle detection edges, and the AP series power supplies and controllers. The compatibility gotcha most Grand Prairie owners run into is this: Linear changed its wiring protocol between older AP-3/AP-4 controllers and the newer AP-5, so a replacement board that fits physically won’t necessarily talk to your existing keypad or reader. You can’t go by looks alone.
How to identify what you have: open the enclosure and look for the model sticker on the circuit board itself, not the outer housing. The housing gets swapped more often than the board inside. If the sticker’s gone, take a photo of the board and the wire colors going into the terminal strip. We can usually identify a Linear board from that photo before we ever roll a truck, which saves you a trip charge.
On parts: we install genuine Linear OEM parts where the controller or phone board is concerned because aftermarket boards have a bad habit of dropping programming after power outages. For keypads, readers, and power supplies, quality aftermarket equivalents are fine and we’ll tell you the price difference for both so you choose. We’re not married to the factory label; we’re married to the gate working next year. We are an independent shop, not affiliated with Linear, which means we buy parts from multiple suppliers and only stock what earns its keep in Texas weather.
One more thing worth knowing: we also stock parts for LiftMaster, Mighty Mule, and Ghost Controls systems, so if you have mixed brands on the property, we handle it in one visit.
Signs Your Linear Access Control Installation Is Failing
- The keypad beeps but the gate doesn’t move. Nine times out of ten that’s a dead relay on the access control board. The keypad itself is fine; the part that closes the circuit isn’t. It’s a board swap, not a keypad replacement.
- Some codes work, some don’t. Linear systems store codes in memory on the board, and when that memory starts to fail, you lose codes randomly. Re-entering them doesn’t help. The board is on its way out.
- The gate opens on its own, usually at night. In Grand Prairie humidity, we see corrosion on the terminal strips from condensation inside the enclosure, especially on units mounted on north-facing walls that never dry out. A corroded terminal can bridge a circuit and trigger the gate. We clean, re-terminate, and often add a drain hole and desiccant pack while we’re in there.
- The telephone entry system rings but won’t open the gate. If the unit answers and you can hear the caller but the open command doesn’t fire, the problem is usually the phone board’s relay or the connection to the controller. Sometimes it’s as simple as a chewed wire from our Grand Prairie rat population. They love gate housings.
- After a power outage, all the codes are gone. The backup memory on older Linear boards doesn’t last forever. If your system forgets programming after every storm, the board’s internal battery or memory chip has failed and the fix is replacement, not reprogramming a third time.
Replacement Cost & What’s Included
Here’s what we charge in Grand Prairie, and what drives the number:
- Keypad or card reader replacement: $225 to $450 installed, depending on whether it’s a basic IEI-compatible keypad or a Linear OEM unit with more features.
- Access control board or controller replacement: $350 to $700 installed, includes re-terminating all wiring and reprogramming your codes and settings.
- Full telephone entry unit replacement (AE series): $850 to $1,400 installed, including the new unit, mounting, all wiring terminations, programming, and testing with your existing gate operator.
- Power supply or transformer replacement: $180 to $350 installed. These fail more often than people think, and a bad power supply kills boards prematurely, so we check it every time.
Every price above is the full price. Parts, labor, programming, cleanup. The price we quote before we start is the price you pay. If we find something else wrong while we’re in there, we stop, show you, and quote the additional work before touching it. No surprises. Every access control installation job carries the same 90-Day Done Right Promise in writing that we put on every gate repair and install. If it’s not done right, you call and we make it right. One call. I’ll be there myself, or you can drive to the shop and look me in the eye.
We also knock $40 off any repair over $200, and there’s no trip charge inside the county. Seniors and veterans get 10% off permanently. That’s just how we run it.
DIY or Call Us?
Fair question, and here’s the honest answer. You can safely open the enclosure and check three things: is the breaker on, is the GFCI on the outlet tripped, and is there visible water or ant damage inside the housing. That’s it for safe DIY. Access control boards run on low voltage, but the enclosure often shares a box with 120V supply wiring, and the gate operator’s high-tension moving parts are right there too. A slip with a screwdriver near the wrong terminal can fry a $400 board or worse, get you hurt.
Where DIY goes wrong on Linear systems specifically: polarity. Linear terminals are labeled, but the labels are small and the wiring colors fade. We’ve had more than one Grand Prairie homeowner swap a part themselves, cross two wires, and turn a $300 keypad job into an $800 board replacement. If you’re not sure, call us at (903) 829-4499 and describe what it’s doing. Tell me what it’s doing, and I’ll tell you what it needs. No runaround. We’ll tell you honestly if it’s something you can handle or if it needs our tools and meters.
FAQs
Five to eight years in our experience, but Grand Prairie heat shortens that. Enclosures mounted in direct Texas sun run hot enough to age components faster than shaded ones, so a board in full afternoon sun might only give you four or five years. If we install it, we’ll mount or shade it so it lasts as long as the equipment allows.
Sometimes, but less often than we used to. If it’s a simple solder joint or a visibly bulged capacitor, we can repair it at the component level and we’ll offer that when it’s genuinely the better call. But most board failures on these units are in surface-mounted components or the programming memory, and there’s no honest way to fix that. We won’t sell you a repair that’ll fail again in three months. Call (903) 829-4499 and we’ll tell you which situation you’re in.
A keypad or reader swap usually takes under an hour from the time we arrive. A full controller or telephone entry replacement runs two to three hours including programming and testing. If we’re running new wire or replacing a power supply, that adds time. We’ll give you a window and a real arrival time, not a four-hour “somebody will be there” window.
We stock the most common Linear keypads, readers, power supplies, and controller boards on our trucks. If you have an odd model or a discontinued board, we source it from our suppliers and the estimate includes the wait time so you know upfront. Most of the time, we fix it the day we show up.
Written by Hal Gatewood, Owner, Gatewood Fence & Gate at Gatewood Fence & Gate, serving Grand Prairie and nearby areas.



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