Turntable Hum


Hello all. I have a very unusual issue that just started a couple days ago. I noticed some hum when my cartridge came in contact with a record (Project Debut Carbon with an Ortofon 2M Blue) turntable on.  The hum isn't as loud as say when you remove one channel of your interconnect and also seems to occur when I touch my Onzow stylus cleaner to the stylist.  The problem did go away briefly yesterday afternoon, then came back, then went away again last night.

Any thoughts? 
128x128cspiegs
A few additional points.  There have been no changes to my set up in over a year. A month ago I had a professional audio sales and take repair shop check out my turntable on record store day. Everything checked out fine. The cart is a 2M red with a 2M Blue stylus upgrade (from a year ago). I put the red back in and had the same problem. 
Right. So those things slide in and out of the cartridge body. If what I suspect happened it would be inside and changing the stylus won't change anything. Try lowering and watching like I said and see what we come up with. 
Well, if the noise was just random, I'd suggest you have a power supply issue.