Rockola 470

I have a rockola 470 with amplifier part 48350-1A, i have no sound in the left channel (although you can hear the hiss type noise from the left speaker when a record is not playing), no sound from the bass speaker or smaller speaker when a record is playing. Fuses are ok, no loose connections, nothing visually wrong with the compenents.Has anybody any thoughts or ideas what to check.
Just to note when i disconnect the volume control and play a record you can hear sound in both the small speakers and when i reconnect only sound can be heard from the left channel
regards
Seancalla

sorry the last message was confusing the last sentence should be sound from the right channel can only be heard