Hi there I still keep this WM-FX433 from the 90s. A few months ago I dissasembled it, the belt was gone so I ordered a new one. Mechanically seems to work ok. But I only get sound from the radio, not when I play a cassette. So the headphones jack is fine. When I play a cassette there is basically no sound. Only a weak buzz when I switch the BASS to the max. ¿any possible causes? Thanks in advance
