We have used a Sony with both our previous BV7-40 and our current BV7-55 and I have had some problems. Ours works fine if I turn the TV on using the DVD button on the Beo 4 or the Blu-Ray icon on our Beo 5. If I try to use the Blu-Ray by switching to another source, then every command requires two presses of the button on the remote. turning the entire system off and letting it set for a minute and then turning it back on with Blu-Ray as the source, all works fine. On our BV7-40 the red standby light would actually blink on and off a few times one minute after being turned off. If I tried to turn back on before the one minute blinks, the player still required two presses of every button. If I turned it back on after the the one minute blinks, all worked fine.
Beovision 7-55 with Beolab 7-4, 9s and 4000s
Beovision 10-40 with Beolab 1s and 6000s
Beosound 1, 5, 2000, and 3000
Beotime, Beotalk, Beocoms