During March and October the sun gets in a certain position, reflects off of the satellites and can play havoc with with the dish. As the sun moves from east to west it will interfere with each satellite for about 15 minutes and can produce major heat reflecting off of the dish that can melt the LNBS, cables, ect. It causes a disruption of signal and the best way to prevent damage is to move the dish to another satellite until the sun moves past it. I have never had a problem with this, though I have seen photos melted components hanging on the button hook.