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