Wanted to let everyone know an issue that I just had and fixed on my 32R. I have my wireless mics connected through 25-32 on the back panel. I have been doing this for 2 years no issues. All the sudden in the middle of a gig I started getting crazy feedback and signal loss. Could figure it out on the fly so I went wired on the front of rack and made it through the gig. When I got home I tested the system and then they would not work. I was like uuugh.
So I took the top off the unit and found that the signal input ribbon cable was loose. Re-seated the ribbon cable and checked the rest of the ribbons and performed a PMT and everything worked correctly.

Hope this helps someone some day. A good lesson learned. I will add an Allen set to my tool pouch.