Average Reviews:
(More customer reviews)Sorry but the Mighty Mule failed me very soon after the 18 month warranty ended. The gate began to intermittently fail to open unless I pressed the remote 5-6 times so I called MM support. The support was very ineffective and focused on either the problem being 'low power',although I explained I had just installed new batteries for the unit and remote controls, or the control board was bad; and because they don't do board repairs, my only option was to purchase a new control board for hundreds of dollars. End of support.
Being a retired computer technician and amateur PC builder, I decided to solve the issue myself; complicated by the lack of schematics (circuit diagrams) or detailed parts information on the Mighty Mule support page. I ended up replacing the 'mini' 12v 10amp relays on the control board with a heavy duty automotive type 12v 40amp relay w/pluggable wiring harness.
Ola! After a year of messing with this problem, my gate opener opens reliably again.
I feel this was a defective control board with underpowered relays and should have been a'factory recall' issue. MM should have offered a replacement boards to customers instead of expecting us to spend hundreds of dollars to purchase a new board 'compatible' with all MM 500 Gate Openers.
Click Here to see more reviews about: Mighty Mule FM500 Automatic Gate Opener for Heavy Duty Single Swing Gates
The Mighty Mule FM500 Single Gate Opener is a heavy-duty, commercial-grade swing gate opener that is very easy to install. Ideal for gates weighing up to 850 lbs. or up to 18ft. long. This 12 Volt, DC-powered low-voltage system is powerful, dependable and durable. Application: Swing gate opener, Works With: Single gate, Capacity (lbs.): 850, Length (ft.): 18
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