@solargoat: Swapping out a broken panel with another older panel. Seems like this is the only option just like changing a tire and rim on the car. Cant just upgrade one from a 16 inch to an 18 inch and expect your car to drive okay. This is going to be a problem in the future for the fake “warranty” PV systems have. Cool to see companies like @SanTan Solar pop up selling used equipment for cheep.