Here's a tip for you:
If for some reason your garage door opener decides to start acting funny one day - let's say it will only raise your door about 5 inches off the floor and then stop - here's a tip that will save you from having to pay a technician a healthy service charge to come out and tell you what the problem is:
UNPLUG THE OPENER AND THEN PLUG IT BACK IN.
Yep, that's right. Evidently, some automatic openers "run on Windows" as my computer geek husband says, and just need to be reset sometimes. So if yours ever does this, try unplugging it before shelling out $60 to the technician.
Not that we know anyone who's had to do this recently. No, not us. Absolutely not. Uh-uh. Just wanted to pass a tip on in case it could help anyone else. ;-)