hello i know your problem
i had this and its so annoying after restart and turn off and on etc
it needs the pin putting in go to TV mode and it will ask for the pin
it did my head in for hours
as if you select DTV it does not ask for pin but the screen comes on and you can control volume but no other controls.
it wants the pin, this caught me out twice
Beovision 7 MKIV (Blu Ray)
Beolab 9
Beolab 6000
Beo 4
Beocenter 9300
Apple TV
SKY HD
Optoma HD65 Projector
Lintronic TT455-RT-238
Beovision 3 MKII