If you have a garage door opener that sounds like it's working... but the door doesn't move, check this out! In this scenario it turns out that the answer would be broken gears! They have been stripped from excessive weight due to the door being heavy. Ultimately, you can blame this entire video on bad or broken springs! That's what makes the door heavy, which strips the nylon gears in the garage door opener. Please watch, learn something, and enjoy! I hope this video helps someone in some way. Please like and subscribe so I can continue to help our community :)