As a contractor I am always looking for information on new technology.
I watched an episode of this old house on solar panels with the solar panel company showing us the solar panels that they had installed.
They actually showed one new house that they had just completed that had 1 solar panel that was already dead.
There is nothing that can be done to replace that 1 solar panel in the middle of the field without taking the entire field apart.
So you have to just wait until the majority of the solar panels are not doing anything except making your house look ugly. Then you tear it all off and send it to the landfill.