Hello again,I tried the box in it`s old position and it wouldn`t come out of standby.After a lot of attempts I got it to work by pressing the backup button on the facia and pushing the other buttons as well.I disconnected 1 LNB and it still worked,I swapped to the other LNB and it continued working.
I looked in the menu for changing to one input but couldn`t find any reference.I took the box to the other room and had to repeat what I did before to eventually to get it to work.The next morning it again wouldn`t come out of standby but eventually did after all the button pushing.
After the box had been in auto standby,at the next switch on it did but I got "no satellite signal being received" more button pushing in random order and it worked again and has done since,going in to standby and coming on again when asked.
1) For Tivu,The box is a Thompson,I don`t know the model,I don`t want to disturb it by moving it to have a look at the plate.
2) For PaulR The Box is 2* Years old but went into regular auto standby.
3) For Topper As stated previously I couldn`t find a menu item for one input selection.
4) For Ralphmagno, A short in the LNB cable was unlikely as my original sky box had been working fine for several months.
Thanks again everyone,
erniev.