There are several parts of a door garage opener.  Knowing these parts will help us assess which parts need door garage repair and which door garage opener need replacement.

1. remote control
2. remote control transmitter
3. receivers,
4. keypads
5. circuit boards
6. safety sensors
7. brackets
8. rollers
9. lock kit
10. gear kit
11. sequencer board
12. wall buttons
13. logic board
14. monitor

Most garage accessories companies and manufacturers have spare parts for sale in case some parts need repair or replacement.  They also provide personal or online assistance.