Turntable hum

If I hook up the grounding wire from my turntable to my amp the hum gets noticeably louder. What gives?

Yale

yaluaka04-18-2019 8:33pm

stringreen Details Discussions Posts This discussion Message User 6,368 posts 04-18-2019 at 08:58pm Copy Comment URL Report Comment Edit Delete what brand of turntable? I guess it hums even without the ground wire? Is the turntable a new addition? Does it hum with the motor on or off?
yaluaka OP Details Discussions Posts This discussion Message User 33 posts 04-18-2019 at 09:07pm Copy Comment URL Report Comment Edit Delete It does have some hum with the motor on, louder when ground is connected. I have not checked what the ground wire hum situation is with the motor off. It is a Gates CB 77 otherwise wonderful.
millercarbon Details Discussions Posts This discussion 12,531 posts 04-18-2019 at 09:14pm Copy Comment URL Report Comment Edit Delete Is everything plugged into the same outlet/circuit?
yaluaka OP Details Discussions Posts This discussion Message User 33 posts 04-18-2019 at 09:45pm Copy Comment URL Report Comment Edit Delete Yes Miller, good thought but everything is.
tzh21y Details Discussions Posts This discussion Message User 1,654 posts 04-18-2019 at 10:11pm Copy Comment URL Report Comment Edit Delete mono cartridge?