Thank you, I will check all connections,Mark

Hello all this is my first post,as I am new to these turntables. I have a 1800 & 3400 The 1800 works as it should till the needle hits the record, then it just has a humming niose, I took the cartrige to a friend with an 1800, and it worked perfect. The cartridge is a mmc5,I did notice the switch on the bottom of turntable, and moved it to the mmc5