We have a Salem Hemisphere and have had the front and the back stabilizer control (or whatever it is called) go out. They needed replaced (two different times). Our unit is just over one year old. The first went out after we had it a few months and the second went out this summer. Our RV repair just orders a new one and then installs it. Do you happen to have the Android tablet in your RV? If so, the stabilizers will work off of that, even if the manual outside control is not working. That being said, this summer our tablet went out at the same time, so the stabilizers did not work at all until we had the tablet and the control replaced.
2010 Ford F-150 Crew Cab
2015 Salem Hemisphere 263RL