Assembled MK109 tonight. Appeared to work correctly for a while… now appears to be working “backwards”. Upon putting the battery in, a random dice result will appear and remain. When the switch is depressed and released, the unit goes into a continuous roll. If you press and hold the switch down, a dice result will appear and remain until the switch is released, at which point it will go back into a continuous roll.
I’m speculating that something happend to C1 or C2, because if you short the leads to either of them out with the tip of a meter probe, the roll stops on a dice result until the button is pressed again.