Replacing the batteries was.
How to change battery in garage door opener chamberlain.
Turns out that after many years the batteries had simply gone dead.
Open the light lens of the garage door opener.
Remove the battery compartment cover.
To replace you garage door opener battery you will need only safety protection gloves and eye protection the replacement battery and a screw driver.
For more information about the chamberlain.
This video demonstrates how to change the battery in your chamberlain universal garage door remote model klik3u.
No lights no nothing.
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