hello Infex, I have the same problem with my Levo that you posted about in 2020 - when I switch on my Levo, the TCU lights up in the usual way, the power mode indicator shows briefly, then it goes off! exactly the same as in the video you posted. did you get it fixed in the end? what was the solution? I am tempted to buy a new TCU but am worried it may be a waste.