Perhaps the BS3000 is in A.OPT 0 where it doesn’t respond to IR codes.
To put it in A.OPT 2: (carry out with the BS3000 at standby)
On the Beo4, press the POWER (red) button and LIST together. Then press LIST until OPTION is shown, press GO (centre button), and then press LIST to show A.OPT. Then press 2.