1964 Zenith Console Stereo with Microtouch 2G Changer

[Electronic M]

Originally Posted by vortalexfan

OK so quick question regarding my Zenith Micro-Touch 2G Turntable that I made into a Standalone unit to use with my computer, I've hooked it up to my computer's Line Input on the back of my computer, but for some reason or another there is a somewhat noticeable ground-loop hum coming through the speakers and is also picked up by my recording software, is it necessary to add a separate ground wire to this turntable when using it as a standalone unit like this or is just that my audio cable I'm using is going bad?

Hard to know from here.
Easiest way to check is grab a clip lead, clip it to the chassis of the changer and the chassis of the PC... Situations like this are why I keep lots of clip leads on hand. Never know when you need to make a quick temporary connection to test or fix something, but it'll be often if you do enough servicing work.