Behringer X Air XR18

I possess a Soundcraft desk that is 35 years old, and it is as functional as when it came out of the box. The XR18 I bought some seven years ago has fried four of it's pre-amps and Behringer supplies neither schematics nor parts to licenced repair technicians. Moral of the story, Behringer is not up to industry standard. Lesson learned; if I can't fix it myself, I won't buy a Behringer product ever again.