Did yu have any luck with your repair? I was wondering, if you were using the BM5500 to test the sound of the components perhaps it’s something to do with the CD input on the BM? Always worthwhile to try different sockets to rule out something unexpected.
<p style=”text-align: left;”>Hi,</p>
When you say ‘all inputs’ do you mean the DIN type sockets for connection of a Phono and/or Tape2? These are stereo inputs – much the same as with almost all other Beosystems of the time.