6th gen a/c controls swap video.
 

There is a very inexpensive and relatively easy fix for intermittent lights/functionality of your a/c controller.

This is for-
-when that is either not an option,
-you've already done it and it worked for another 18 months then it gave up the ghost for good
or
-you just want a new one.

https://youtu.be/v3Sarqc7PpA