Answer: in the warranty period and non-human damage can go to the sale free of charge for new.

答：在保修期内且非人为损坏可以去售后免费换新。

youdao

For products in the warranty period, such as quality problems, maintenance costs borne by the Division I.

所供产品在质保期内如出现质量问题，维修费用由我司承担。

youdao

The warranty period or free maintenance period has expired or no evidence shows that the product is still in the warranty period;

已经超出三包有效期限和免费维修期限或者无法证明在保修期内的产品；

youdao

Studies have shown that most major breakdowns occur after the warranty period expires, and that in most cases, the repairs cost "about the same" anyway.

ENGADGET: Earth to consumers: extended warranties are a bad deal

As in any insurance, a home warranty more than pays for itself if something expensive goes haywire within the coverage period say, the furnace fails.

WSJ: Is a Home Warranty Necessary in a Hot Market?--WSJ House Talk