The safety sensors are out of alignment. Thus, check the batteries on the remote if your garage door opener is not reacting. Common reasons your garage door opener may not be working properly: The batteries in the remote control need to be replaced. If you need help with repairing your garage door opener, schedule a repair appointment today. Explore other popular Home Services near you from over 7 million businesses with over 142 million reviews and opinions from Yelpers. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear … Garage Door Opener Repair. Modern garage door openers communicate with the remote by a radio frequency of 315mHz. Of course, batteries may not be the only culprit. Looking to repair your garage door opener? Garage Door Opener Won't Open All the Way Fix: Replace the main gear drive If the garage door opener makes a grinding noise but the door doesn't move, your main drive gear is probably toast. The door needs lubrication. To clarify, you could be out of range, or the antenna on the opener could be damaged. Find the best Garage Door Opener Repair near you on Yelp - see all Garage Door Opener Repair open now. Common problems could range from issues with the remote or wall switch that control the garage door opener to more serious issues like a grinding noise coming from the opener itself.