The Magnussen-Moss Warranty Act [1] lays out many requirements and terms of reference for warranties in the US. One specific requirement: "Warrantors cannot r

The Magnussen-Moss Warranty Act [1] lays out many requirements and terms of reference for warranties in the US. One specific requirement: "Warrantors cannot require that only branded parts be used with the product in order to retain the warranty.[7] This is commonly referred to as the "tie-in sales" provisions,[8] and is frequently mentioned in the context of third-party computer parts, such as memory and hard drives." [Wikipedia] Edit: Additionally, the onus is on the manufacturer to prove that a non-OEM part or service was the proximal cause of a warrantied failure. They don't get to put it back on you without proving their case. [1] https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty_Act https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty...