So I discovered that my G19 was having some sort of weird issue where the lcd screen would continually blink on and off and make everything but the basic keys unusable so I had to open it up and check out what was happening. Turns out that the wires that connect to the LCD aren't properly insulated and that was causing the problem, so I just wrapped them in some insulation tape and it seems to have fixed it. Cant believe this sort of thing is overlooked so easily, people are having problems left, right and centre and logitech insists that it has nothing to do with them or their hardware and that it's a motherboard issue. So for the next few days my keyboard will be a G19 just to see if it's working properly.
The wires in question
Sloppy job but I couldn't really do much short of pulling the pcb out because it's so cramped.