如果想學習一下是否可以自己換的話，可以參考這個網站的Howto視頻。

https://diygaragedoorparts.com/how-to-videos/

 

Costs: $151.90 - 1x Torsion spring, 2x cables, 2x winding bars, 1x center bearing, 2x cable drums

Time: ~30 minutes assuming you have all tools.