@jereeb The problem is the ground wire on the phono isn't making a connection. So the thing to do is run a wire from the tonearm base (assuming its metal) to the chassis of the EAR.
If there is a screw securing the arm to the plinth of the turntable that is the ideal point to put the wire.
The RCA cables and cartridge connections are obviously OK. Its normal for the 'table to not be plugged into the wall and have this happen if the ground wire has an open connection.