I experienced the same its just happen the loss of the TV channels have moved off the transponder, but I have worked out the fix see below
Its all over the forums the loss of the epg 7 day guide as there is no current tv programmes on the frequency since the weekend
And the fix is here
11.777v 27500 28.2 east no longer has the TV programmes where you went on that channel and stayed on one for 5mins and it populated the 7 day epg, this was a loss on the TM Range of boxes and others that got the Sly EPG
Ok here is the fix for the loss of the TV channels on 11.777 v (if you rescan no tv only audio comes up)
TM Range Of Boxes
Press the TV/Rad button on remote to select radio channels move down on A-Z to E select the first one named EPG Background Au
Press the epg button on remote stay there for 5 mins
Now return to TV on the TV/Rad buttton
Select any TV Channel and press the epg button on remote and you now have 7 day epg programme guide again.