I had this happen to my console, ac pan overflowed and dripped on to channel strips, only for about 10-20, min at most. I didn't have many issues in the area of the dripping, but I did have an issue where all the moisture got sucked to the little wire runs on the back of the cards. The heat shrink attracted the moisture, all my eqs were motorboating......and my center section was messed up.....i replaced all the heat shrink with water resistant stuff, cleaned all the cards.
The g+ might not have this issue, my console is an e series