Jonnie,
It is possible, BUT only if you have one of the following products:-
BeoVision 3 - 32 MK III
BeoVision 5 - 42 MK III
BeoVision Avant - 32 DVD MK III
BeoSystem 2 MK II
BeoSystem 1 MK II
AND they have TV software version 15.1 or above.
If you do have 15.1 or above then you can have soft standby setup on STB :
This feature means that you can decide when, or if, your STB should enter Standby, and the setup of this function is very dependent on your type of STB.
After selection of STB type, the following menu is shown
The contents depends on whether one or two STBs are connected.
The example shows 2 STBs.
STB(SAT) off STB(V.AUX) off
At TV standby After 30 min
It is possible to choose between: After 0 min OR After 30 min OR At TV standby OR Never
"Never" meaning that not even ALL STANDBY will shut off the STB.