Hum when phono stage is turned ON. Popping, crackling after playing record for few mins

Two separate issues.
Problem 1: I have a Pro-ject S2 phono stage with a two pin power adapter. When connected to my Receiver, there is a constant hum in the speakers. Will connecting a copper wire to the ground pin on the phono fix the hum?
Problem 2: Record plays cleanly for about 45 seconds to a minute. After that I get a periodic crackle or pop every 5-10 seconds which gets louder as time passes. Record and needle are brand new. When I walk up and touch any part of turntable, the popping goes away so I'm guessing this is static electricity that discharges through my body. Will this also be solved by grounding the phono? Does adding a humidifier really solve this problem?