Chosen Solution
My dolce Gusto stoped working when connected to electricity. Light does not even appear
it happened to me months ago and finally fixed it today. The on/off switch consists of a piece of conductive rubber that makes contact with the circuit underneath. In my case the circuit or rubber became misaligned or dirty.
Either way what fixed it was to disassamble the switch side carefully, remove the switch rubber, clean it and the circuit with some q-tips dabbed with alcohol and reassamble all. Deassembly was the biggest pain.
There are two thermal fuses in the back, above the boiler. Replace them both.
I think you should check your Dolce Gusto Genio’s mainboard(motherboard) or power port. Then I think you could fix it. Have a good day^^