[jolmg]

A better analogy may be how we have a right to take apart our electronic devices, but as soon as we do we void the warranty provided by sellers and/or manufacturers. INAL, I don't know if all warranties fall under contract law, but it makes sense to me that at least extended warranties do, and I imagine those are also voided in such cases.

[secabeen]

Only if you are ignorant of the Magnuson-Moss warranty act. It is not legal in the United States to blanket void a warranty when a device is taken apart or disassembled. Manufacturers can decline a warranty claim when work down by the owner or another servicer causes an issue, but the warranty remains intact for anything unrelated to the work done. So, as an example, if you repair the plug on your electronic device, and then the keyboard has a fault and a key fails due to a bad keyswitch, they still have to replace the keyboard, as your plug repair has no relation to the failed keyswitch component.

https://www.ftc.gov/business-guidance/resources/businesspers...

https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty...