Manufacturers say the average life expectancy of an opener is 15-20 years. Since new openers are inexpensive, if the unit is over ten years old then it might not be worth repairing and it may just be time for an upgrade. If it's newer, then it's more likely a repair will be worth it.
For residential garage doors there are 3 main types of garage doors that you can choose from: Roller Door, Sectional Door or Counterweight (also referred to as a 'Tilt' Door)