I have a BEOGRAM 2404 connected to a Pioneer SX-737 receiver with a DIN to RCA adapter. 

On start-up I am losing left channel sound until I change the B+O ground lead position on the receiver ground stem then everything works great. 

Is this a B+O issue from the DIN to the turntable, or receiver issue?

This happens with my original DIN adapter and a new DIN to RCA adapter.

Thanks