Hi,
My oven has had this problem for almost a week now. Today I tried everything on the Internet, Turning knobs off and on, switches the same but no response.
So in frustration I hit the counter top above the readout and low and behold the dashes came on. My luck must be in, I am off to buy a lottery ticket.
Joking apart
I hope you all manage to to get it working.
Allan Oxberry, September 2015