Latest Discussions : Garage

BV017358

08:30PM | 09/08/18
We had lightning strike near enough to us the other day that several things that were not behind surge protection fried. When I left the next morning, the garage door opened but it wouldn't close - the lights blinked multiple times.

We have a Liftmaster 139.53964SRT

Since the sensors had no light but the actual opener (including lights) appeared to be OK, I got new sensors ( https://www.amazon.com/gp/product/B06ZYDH4WK/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 ). However, connecting them to the existing wires did not make the lights on the sensors come on. My unit has wires running to the door opener by the door to the house and one strand of wires going to the one side from where wires continue to the other side. I put the one with the yellow light where the wires from the opener go and the one with the green light on the other side. My understanding is that if electricity is flowing to the sensors, the yellow light should be illuminated.

I tried to connect the yellow light sensor directly to the opener to rule out the possibility that the wire in the wall is messed up. I also tried to prove that the circuit board is still OK by completely disconnecting the wires as well as running a wire directly from port 2 to port 3 but the opener wouldn't fall for that trick.

I'm considering replacing the circuit board (I'm confident I can put a new one in - I'm not so sure about an entirely new garage door opener as often is suggested in place of just replacing the board).

I'm trying to determine whether the things I've tried establish that the circuit board needs replacing even though the garage door opened successfully after the lightning strike, the light bulbs on the opener are still lit (yes, I did disconnect power whenever I connected/disconnected things), and the lights blink the error message when trying to open the door. In essence, could the circuit board be "partially damaged" and replacing it is my next best step?


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