Hi, Could you explain what this "Code" message tells. I have had several BM3500/4500 with faulty backup battery but they still work they just don't remember the settings after power has been off. Some BM3500/4500 have trouble with the Mute relay on Speaker 1, do you have the same problem when you connect your speakers to Speaker output 2? Can you operate the Beomaster via the front touch buttons? /Pindsen

A Beomaster with a bad backup battery can act up in different ways. If nobody knows which settings and what content is being stored in memory, things really get quite unpredictable. Martin

Did you try the method stated in the service manual? Martin

Hello Martin, It seems that i did not find the method described, or i overlooked it. Would you be so kind to write it down here for me? ? Thank you for the fast reply   David

Hello, i serviced a bm4500, also replaced the battery in the processor box with a battery and a fresh battery. Everything works, exceptbthat it serms that you must re-program it ( little bit like BC9500) but the key combinations for bc9500 dont work. Inset it in mode 1 with a beolink 1000. I can not store volume treble and bass settings. (S/W is version 1.6) I serviced a beomaster 3500, after i set it in mode 2 everything works perfect. I did test the bm with the beolink 7000 and no communication. the volume changes and gi then with a letter from the alphabet but not to zero… Can somebody give me the key combination? Before i changed the battery, everything worked perfectly. I replaced the battery prevently against future leakage.   thank you in advance

In test-mode press 7 to delete RAM settings and revert to defaults. Service manual page 7-2 and 7-3 describes it. Martin

Hello Martin, Thank you ?? I did not read it in the manual. Feeling a little dumb now ?? David