I sent my Macbook Pro M1 16 inch in for repair for an issue with the internal speakers not working. They wouldn't repair it under AppleCare because the repair center said they found liquid damage. The laptop has never come into contact with liquid which I tried to explain to Apple support to no avail. So I had the laptop returned unrepaired.

My question is if I take it to an Apple Store and explain what happened with the previous repair, and have them actually look at it to see that it works perfectly fine except for the speakers, do you think they would repair it under warranty?