Allen & Heath MixWizard WZ3 Mono Input Issue 4 Circuit Board PCB 16:2 12:2 Input

New, No Box 

One of the buttons is a bit sticky when pressing it

For Allen & Heath MixWizard WZ3

Part Number: 003-167

AG5390

Sliders are in Good Condition 

16:2 & 12:2 Input Channels