We had heavy rain along with thunder and lightening. I returned home to find my garage door open. I have a Craftsman garage door opener. I tried closing the door, but it jerks very bad in a back and forth motion. It will only close a few feet and then returns to the open position. I tried unplugging the motor in hopes of it resetting, but that did not work. What happened to my opener? Did a power surge ruin it? Can I fix it?