We clean them out thoroughly.. that includes the fans, dvd/bluray drive and the case. We reflow the the GPU and install fix’s for both Xbox 360 and PS3. We stress test the consoles on our burn racks to make sure they hold up. we don’t sell them unless they past our tests 100%, also we make sure that the consoles can connect to their respective online network.. we do not sell banned units. CRS cares about our customers and your satisfaction is important to us.