Hello Guy and Millemissen,
thanks for your quick resonses. Much appreciated. I forgot to mention that the remote was in fact set to MODE 2 and ZONE ALL.
Today I played around more and found out that the BL2000 and the Century still would not respond until I got really close to them. So the BV8, BV7 master, BL3500Mk1 work like with any other Beo4/BL1000 I have.
Only for the Century and BL2000 I have to go really close to operate them. Any idea why? Batteries are new-ish. Any idea how I could to turn a proximity control to a remote control again 😉
Thanks,
Ralf