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My craftsman garage door sensor receiver not works time by time, may because of the winter cold? I opened the receiver's box and plugged into the connector, the green led is on, disappear after few times open and close test. Should I buy a set of new sensor or fixable? Or is it OK to exchange the left right side of transmitter and receiver?

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closed as off-topic by pipe, Elliot Alderson, Bimpelrekkie, Transistor, Dave Tweed Jan 11 at 15:18

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. See also: Is asking on how to fix a faulty circuit on topic?" – pipe, Elliot Alderson, Bimpelrekkie, Transistor, Dave Tweed
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    \$\begingroup\$ In order to be able to make a proper judgement on what (might) need to be replaced someone with 1) knowledge how the system works and 2) proper tools and 3) replacement parts needs to be on-site. U1 looks like an IR sensor that leads me to believe that your remote uses IR as well and works on batteries. Are you 100% sure those batteries are OK? If they are there can be many other points where the system can fail and which are not the detector board that you show. If you want (learn how) to repair, fine but then invest in learning how things work, just don't ask us what to replace. \$\endgroup\$ – Bimpelrekkie Jan 11 at 15:17

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