A borrowed Joy-Con started drifting. Do I owe my friend a replacement before we know why?
GamingWhen I returned the Switch, the menu cursor kept moving left. My friend said, "It didn't do that before you borrowed it." I don't remember it happening during my weekend, although one character kept veering and I assumed I'd chosen awkward controls.
The console stayed on a table; I didn't drop it or spill anything. That doesn't prove nothing happened while it was with me. He's asking me to buy a new pair of Joy-Con controllers. I want to make things right, but buying two controllers before checking the one that misbehaves feels like jumping to the end.
[Nintendo's troubleshooting guidance](https://www.nintendo.com/au/support/articles/joy-con-control-sticks-are-not-responding-or-respond-incorrectly/) includes checking inputs, updates and calibration, with inspection or repair if the problem remains. It doesn't tell us who caused this instance or what it will cost where we live.
How would you handle responsibility for a fault discovered after borrowing? I'm willing to help with checks and a support inquiry, but I don't want uncertainty to sound like I'm refusing to care about his controller.