[译] 我把卡式录音机带了回家，发现它不灵了，我试着自己动手把毛病找出来。
[误] When I got home with the cassette recorder, it wouldn’t work. I tried to find the mistake myself.

[正] When I got home with the cassette recorder, it wouldn’t work. I tried to find the fault myself.
[注] 拼法、文章、计算、决定等出错才用 mistake。机器或电器产生的毛病用 fault（此处也可用 defect）。如：You made three mistakes in grammar tonight. 今天晚上你出了三个语法错误。/There is a fault in the electrical connections. 电接触出了毛病。