The repair is easy. Two screws in the back hold the top cover - once they are off you need to slide the cover back and it comes off. The valve is right there where the cold water hose is connected. Disconnect the control wires / clamp and slide back the wire clamps / remove the two rubber hosed / remove the old valve (it is snapped in place - look at the new one to understand the snap mechanism) / install the new valve. The repair takes less than 10 min.
I tested and sure enough... now it works :)