Saeco Vienna Plus will not turn on

My Saeco Vienna Plus is completely dead. No lights, no noise.

I tried different outlets, I tested those outlets, all tested fine. I opened the case, and tested the main fuse, it was fine.

It happened after I did a descaling. I did the required 2 rinses with clean water, during the 2nd rinse, the machine complained, lights flashed, the pump sounded odd, it stopped running. I switched the machine off, waited a couple of minutes, turned the machine back on and it worked fine.

I finished up, cleaned the machine, and moved on.

Later, when I pushed the power button, absolutely nothing happened. No lights no gear sounds, nothing.