Hi Benijofar.
Can't get the community to pay for the engineer yet, but I have persisted with this and some strange behaviour is going on.
All the FTA works as previously described...i.e. works for a few minutes then drops out.
ALL the SLY stuff, movies, sport works perfectly - other than the very occasional glitch, where the ecm is a bit high, this is just not an issue. TBH I am more than happy, as I get to watch the football, but not BT Sports.
If I want the FTA channels I just plug in the old Humax. you any other ideas what this may be? I would love BT, but can live wiithout it.