Vienna:
Just an idea, maybe you'll have to reconfig the BL5000 to "One Way Communication" for audio and video.
That´s a very good idea.
Perhaps I should have mentioned that my BL5000 was configured for one-way communication.
I don't think there is a way to generate the PC command with a BL5000 or BL7000. Neither in two-way nor one-way configuration. The obvious explanation is that the PC command simply didn't exist when these remotes were designed around 1990.
What the BL1000 really does, when you press [SHIFT] + [STORE], is to generate a PRINT command intended for a Beovision LX2500/2800 with an attached Teletext printer. As hardly anyone ever used this, the command was quickly deprecated, but it was retained in the BL1000 software for backwards compatibility. The infrared command code for PRINT (hex 0x8B in video mode) was later reused and renamed to PC when the Beolink PC Office came out in 1999.
If this theory is correct, it should also be impossible to generate a PC command with a Beo4 Mk I.