My LiftMaster garage door won't open. What could be the problem?

If your LiftMaster garage door won't open, common problems include power issue, remote battery, safety sensor misalignment, locked door, or motor failure. First, check power, ensure opener is plugged in, outlet has power, and circuit breaker not tripped, as power outage will prevent operation. Second, check remote battery, replace battery in remote and try wall control, if wall control works but remote doesn't, remote battery or programming is issue, reprogram using Learn button. Third, check safety sensors at bottom of door tracks, ensure LED lights are steady, not blinking, and sensors aligned, clean lenses, and ensure nothing blocking beam, as misaligned sensors prevent closing but can also prevent opening in some models. Fourth, check if door is locked or in lock mode, ensure manual lock not engaged and vacation lock on wall control not activated, which disables remotes. Fifth, check for broken spring or door jammed, try opening door manually by pulling emergency release cord and lifting door, if door is heavy or won't lift, spring may be broken requiring professional repair. Sixth, check travel limits and force settings, if limits not set correctly opener may not open fully. Seventh, check for overheating, if opener motor hot, wait 15 minutes to cool. If none of these fix, motor or logic board may have failed, contact LiftMaster support or professional technician.