So are you sure they are going out? Is it possible that once out they quit working (since they won't come in)?
It is possible that your in line breaker (our's has a self-resetting breaker that failed this summer while on vacation).
There was a clicking sound like you get when your car won't start. I would take a test light and see if you are getting power across both pegs (pictures included of what our's look like and the one that needed replaced). It was a $12 part, 50A breaker.
Do you have hydraulic levelers? If so, are they working? If it's not the breaker, it could be the solenoid by your pump which Lippert had me replace when they were helping me troubleshoot on the road.
The bottom picture is the solenoid on our Lippert Level Up/Hydraulic slide system. Our's is a 2016.