I have an S Class machine that was leaking steam inside the machine. I replaced "O" rings in both the steam value and the in the dispensener. This fixed the problem. Unfortunately, I let the problem linger too long before repairing the "O" rings and now the display does not function. The machine still makes coffee, steam, etc by using the touch panel from my own memory of key assignments. Is it possible that the display just needs time to dry out, reset, etc or does it need to be replaced?