I do have a call into Yamaha and will be waiting to see what they suggest in regards to replacing vs cleaning. I will more than likely swap out the pcb board and the effected faders as this console is only 5 months old BUT what would be a good cleaner for pcb boards to clean something like this? And is there a good practice method?
Mild dishwashing soap (not detergents), a toothbrush or acid brush, distilled water for rinsing, hair dryer.
The faders should be replaced.
As your desk is still under warranty, this work should be done by a Yamaha-authorized service center. My guess is it will cost you $150-$200 plus transport. Send the bill to the club - their employee, their cocktails. And good luck...