Beosound 3000 to beogram 3300

Hello,

Have the above connected with a phono stage all works fine except on turning up the volume I get the buzz/ hum sound, beogram has the ground connected to phono stage and all good cables from Steve at s/h.....is this the motor in the turntable or something I am missing....I have filters on to try and eliminate this.

Have had a technics sldl1 with no issues.

Or is there a better place to fit ground wire on tt......would appreciate pics.

Rgds