電動自行車的“心臟手術”：修理控制器 （最佳性價比電動自行車，如何維修？最佳性价比电动自行车系列，自行車又叫腳車,單車,腳踏車,电动脚踏车,电动车,電動輔助,電動助力車，如何修理，保修，保养？）

My electric bike was broke down. I repaired by replacing the E bike controller. The obsolete controller looked quite new, and I was very curious about what is inside. Then I just opened it and tried to fix it. Fortunately, it is almost too easy to fix. So, waste has been turned into treasure, and I got an extra e bike controller.
Music thanks to: bensound.com