I get a Check Fan message when I turn on tv

sakdvarner your Samsung should have two fans. Fan #2 is the larger one facing the back of the set. The fan is screwed into the black enclosure that can be seen in the above picture. It's difficult to impossible to unscrew the fan from that enclosure without sliding out the whole part as if we were replacing the color wheel. Once you slide that out, you can unscrew the black box with the screws in this picture. Take a look on here for some good images regarding the location. We could possibly give you more info if you let us know what exact model your TV is.