It’s pretty obvious when the opener isn’t working: you push the
button and nothing happens. Don’t panic; pay attention to little clues
instead. If, for instance, a control pad fails to light up or the motor
makes an unusual sound, your best bet is to check that specific
component. When there isn’t a visible clue to track, consider the
symptoms to suggest a cause and possibly a cure.
See next 4 posts for tips...
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