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After my second MM500 failed because of control board issues, I only kept the MM500 housing and the motor assembly with red and black wires still attached, then put 2 DPDT 12 relays inside the housing, where the control board used to be. Then bought a 12 remote control from Amazon to control the...

After owning 2 mighty mule 500 gate openers and having the last one also fail with a bad control board as did the first one, i decided to not buy their overpriced replacement boards. I removed all of the insides, with the exception of the working motor and screw shaft; then from Amazon, bought 2...