Garage door does not work

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  • Updated 2 months ago
I have purchased 2 chamberlain openers B750 about 3 months back. 
One of them works on and off. At times I have to unlink the door from the belt and then open and close the opener. I looked at the troubleshooting and the up and down arrows show 1 blink of up arrow and 5 blinks of down arrows. I checked the sensors, and they are fine (one solid green, and other solid amber). The garage spring is fine (not broken)
So, does this mean, I have to replace the logic board? I have purchased this unit thru homedepot. 
Thanks for any suggestions. 
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Ashish Patel

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Posted 2 months ago

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