As sonic1 proposed, I had done a clean flash and solved the issue.
WOL is working again, too.
1- Did you check if the tuner sits firmly in the slot?
2- If you swap the two tuners (I presume there are two single tuner boards): does the problem swap as well?
Reflashing is more simple than fragmenting the box. So I tried this first.
Because the Duo2 is working properly again, I can say that both options couldn't habe been the reason.
ar it a old turnermodule u have? my is a Vuplus DVB-S NIM(AVL6222) (DVB-S2)
Higher number could/should be newer and hopefully better. *grrrr*
Well, I bought the Duo2 from a retailer "as it is". If the retailer put in some old tuners, maybe. Normally I would ask the manufacturer, but I never got any reply from Vu+ ever. So no option.