low audio output

[haightc]

My grey Japanese model 1 Saturn wasn't recognizing cartridges anymore and the power inlet had been broken for sometime now.    So I picked up a white Japanese Saturn to use in the meantime until I fix my grey one.   However the audio output is really low on this white Saturn and I am not sure why, RGB out maybe a little cleaner though.   What specifically should I be looking for to address the audio issue on the white Saturn.