Not sure if you could do this with newer models, but I fixed mine! The fan would not start. And thus, if I left it on the fan motor would quickly burn out. So I took the cabinet off (6 outer screws and 3 hidden screws covered by front panel). Then took off front panel (2 screws and remove control knob). Took off one screw on motor bracket and then 2 nuts holding motor on. Took 2 more nuts and motor came apart. Cleaned shaft and put back together after cleaning entire inside of unit. Works great now and no longer have to bang on the top to get the fan going! Nice not to have to shell out $200!