Just for info: to all who have scrambled powervu channels, the unstable SNR (jumping from 0 to 70%) or the channels works only a short period of time ->>> it's time to change the LNB !
Have changed mine (7 year old, noname) with a 20€ one from Amazon and now the PV channels works like a charm
Thank you levi45 and enigma1969 and the all the others devs who keep this thing going (for testing reasons of course) :)