My guess is, it is clicking on the screen. There is not much inside that motor to click (and still work). Try removing the screen first. If it really is the motor. You can buy replacement motors at RV stores. Maybe at auto parts shops also. The motor itself is not hard to replace. Just take a quick pic BEFORE you disassemble.
I started with nothing, and still have most of it left
2001 Jayco KIWI 23B
2003 Jeep Grand Cherokee 4.7 AWD