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Finally, got around to checking the transformer, but i'm not seeing voltage moving into/ through it. I've made a little diagram of the pins and which have continuity. There is AC going into the board. Perhaps Im just not sure how to check the voltages into out of the transformer. I had thought...

Okay, I understand now...Im comfortable to measure the voltages across a component. Im aware of the seriousness of AC. I'll have a look tonight. Thanks so much! I'll let you know what I find.

Are you sure that's the case with the Exprelia model? As I can measure AC 120V going directly into the power board. This is the board... https://www.wholelattelove.com/products/ga-11021342-power-board-120v We are at the limit of my electrical understand so entirely possible Im mistaken...

Can I do that if the power board wont power on? That's the problem. I have AC going into the board, but then the board seems totally dead. I just know enough to check voltage and continuity, but not much more than that, so maybe i'm missing something?

Thanks for the reply... Yes, it was making coffee. And 100% functional. I checked the fuses on the PCB as well as the thermal fuses on the boilers. They are all intact, and I have electrical continuity across the full boiler circuit.

Hello, Hoping to find some guidance in fixing my Exprelia. Thanks for reading. Well I was running a descaling cycle, walked away and when I came back the machine was off and wouldnt turn back on. I suspect something must have fried in the power board. Im fine to replace it but not sure if...