You can apply for a refund first, or contact customer service to inquire about the situation first, and see if the customer service requires you to return the product for a refund or return it for repair.

If you just want to repair it and don't want to return it, tell the customer service clearly. If the communication is good, you don't need to apply for a refund. If the customer service does not handle it, you can contact Taobao customer service to intervene. Normally, the customer service will not ignore your situation.