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Mighty Mule Keypad & Intercom Repair: The North Richland Hills Owner’s Guide
Mighty Mule keypad and intercom repair in North Richland Hills typically runs $120 to $260 installed, and we carry the common keypads, intercom modules, and wiring harnesses on the truck. Most owners discover the problem on a Monday morning when the keypad lights up but won’t send the gate, or when the intercom crackles but nobody can hear you on the other end. We’ll match your part to the exact Mighty Mule model you have, wire it in properly, and stand behind it.
Here’s the thing most people don’t know: Mighty Mule has changed their keypad and intercom wiring across model generations. A keypad from an FM200 series won’t just drop into an MM360 or MM571 system, even if the plug looks close. The wire colors changed, the voltage tolerances changed, and the connector pitch changed. We see this all the time in North Richland Hills where a homeowner bought the first part they found online and ended up with a dead keypad and a frustrated afternoon. We stock the right parts for the models we service, and when we don’t have a harness, we wire it properly rather than splicing something that’ll fail in a Texas downpour.
Which Mighty Mule Models This Applies To
Mighty Mule has shipped a lot of series over the years, and the keypad and intercom parts don’t cross over neatly. The older FM-series (FM200, FM350, FM500) used a 3-wire keypad setup with a simple contact closure. The MM-series (MM360, MM371, MM571, MM572) moved to a 4-wire setup with a power feed for the backlight. The newer wireless keypads use a completely different radio and a paired code. To identify yours, check the label on the control board under the opener cover. It’ll have the model number printed, and that’s what we need to match the right keypad or intercom board.
On the OEM-versus-aftermarket question for Mighty Mule specifically: we’ve had better luck with OEM keypads than with the universal aftermarket ones. The aftermarket units work, but they sometimes need a relay adapter to match the Mighty Mule trigger circuit, and that’s one more connection to corrode. For intercoms, the reverse is often true. There’s an aftermarket module with a metal housing that’s easier to service than the original plastic one. The wrong intercom module can backfeed 12 volts into the master unit and blow a board, so this isn’t a guess-and-check job. The fix starts with the right part for the model, and the part number is our problem, not yours.
Signs Your Mighty Mule Keypad & Intercom Is Failing
- Keypad lights up but the gate doesn’t move. Usually a broken wire at the hinge point or a corroded terminal in the keypad housing. In North Richland Hills, the freeze-thaw cycles between February and May work wire connections loose over time.
- Codepad accepts the code sometimes, not every time. The keypad membrane is usually worn, or the battery in a wireless keypad is at the edge of its voltage. We can test the output with a meter before swapping anything.
- Intercom buzzes but no voice comes through. The speaker wire at the master unit is almost always the culprit, or the intercom module itself has a blown audio transistor. This is not a safe repair to guess at with jumper wires live.
- Intercom works but the gate button on it doesn’t. The relay on the intercom board has failed. That’s a repairable board on some models, and a replace-the-module situation on others. We will tell you which before any work begins.
- Metal keypad housing is rusted or cracked. North Richland Hills sits in a humid subtropical band, and the older Mighty Mule keypads with steel backplates rust at the bottom corners first. A new silicone-sealed unit stops the repeat failure.
Replacement Cost & What’s Included
In North Richland Hills, a Mighty Mule keypad replacement typically runs $120 to $180 installed, and an intercom module replacement typically runs $180 to $260 installed. The range depends on whether we are replacing just the keypad membrane or the whole housing, and whether the intercom needs a module plus a new speaker wire run. Every job includes the part, the labor, the wire work if it needs it, and a test of the full system before we leave.
We are an independent gate shop, not affiliated with Mighty Mule. But the parts we install are matched to the model, and the price is agreed on before any work starts. There is no trip charge inside the county, $40 off any repair over $200, and the 90-Day Done Right Promise covers everything we touch. If a new keypad fails in ninety days, we will be back to make it right, no questions about the weather.
DIY or Call Us?
You can safely do a few things yourself before calling: check that the keypad’s wire harness hasn’t pulled loose at the control board, check that the board’s power LED is lit, and check the physical condition of the keypad and intercom units for cracks or water entry. A visual check is fine. A multimeter live on the board is not. The keypad and intercom circuits run on low voltage, so the risk is not a bad shock; the risk is shorting a board on a live opener and turning a $150 keypad job into a $600 board replacement.
We have seen enough field-spliced keypad wires and mis-wired intercom modules in this area to say plainly: this is a parts-match job first, and a wiring job second. The wrong guess gets expensive. The right call is (817) 241-4067. We’ll confirm your model, bring the part, and get you working that day. No dispatch queue, no estimate roulette.
FAQs
A properly installed Mighty Mule keypad in North Richland Hills typically lasts 4 to 7 years before the membrane wears or the housing seal fails. Intercom modules last 5 to 8 years on average before a speaker or relay gives out. The Texas heat is the main wear factor. Direct sun on an unshaded keypad degrades the plastic and the membrane faster, and humidity creep gets into units that were not sealed with dielectric grease at the terminals. We apply that on every install as standard practice.
Some failures are repairable, usually the intercom board relay or a corroded terminal. If the problem is a tired keypad membrane or a cracked housing, the unit gets replaced. We will always tell you which one applies and what the repair versus replacement price looks like before we do either. Call (817) 241-4067, and we will give you an honest read on your specific model.
Most Mighty Mule keypad replacements take under an hour on site, including the programming test. Intercom module replacements take about an hour to an hour and a half, depending on whether the speaker wire needs to be pulled. We schedule the job for a specific window, and the person who shows up is the person who does the work. No crews, no handoffs.
We keep common Mighty Mule keypads, intercom modules, and wire harnesses on the truck for the FM and MM series we see most in North Richland Hills. If you have a model we don’t have a part for on hand, we order it and schedule you for the day it arrives. We also carry parts for LiftMaster, Ghost Controls, and DoorKing, so if your opener is a hybrid setup, we can sort it in one visit.
Give us a call at (817) 241-4067. Hal Gatewood has been fixing gates in North Richland Hills since 2001, and most of our regulars know him from the Smithfield Road corridor where he grew up and still lives. The 90-Day Done Right Promise is in writing on the invoice, and our price is agreed on before any work starts. If we hand you our number, use it. That’s what it’s there for.
Written by Hal Gatewood, Owner, Gatewood Fence & Gate, serving North Richland Hills and nearby areas.





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