Disconnect Electricity: Right before working on your garage door opener, disconnect the power within the breaker or unplug the unit to forestall accidental Procedure and lessen the potential risk of personal injury or electrical shock. Immediately after intense temperature shifts or mechanical repairs, re-Test the garage door opener travel limit https://youtu.be/wSkWTAdm-Gg?si=pR5EXdjVuNYjtHN7