shuō qīng nǎ lǐ huài le shén me xiàn xiàng shén me shí hòu kāi shǐ shì fǒu yǐng xiǎng shǐ yòng

说清哪里坏了、什么现象、什么时候开始、是否影响使用。

Clearly explain where it's broken, what the symptoms are, when it started, and whether it affects usage.