@tightpants you want to check the microswitches on the board. Pushing the menu button does do nothing but activate the switch on the logic board. Sometimes the rubber pads on the switch come off and do not let the clickwheel depress the switch far enough. Check the switch as shown in the pictures.
[image|1218271]
Switch not activated
[image|1218272]
Switch activated
To fix that you can add either a new rubber tip or something similar to fix that. I used some self sticking felt pads from a crafts store. If the switch works (as shown) and if the clickwheel engages it then the issue is actually one on the logic board.