Sota Comet Grounding question


Hi,

I recently picked up a Sota Comet with a Jelco JA 250st tonearm for cheap because the arm needed rewiring. It was my first time rewiring, I used cardas wire and tags, and attached a ground wire inside the arm tube as well as one attached to the arm base. All the wiring connects to a terminal in the chassis, where the rca cables are soldered. The two ground wires connect to the grounding cable which runs to the lug on my preamp.

The question I have is regarding the ground lug that is at the bottom of the chassis. It looks to me like this lug connects to the motor. Where do I connect a ground wire from this to? I am getting an awful lot of static whenever I touch the platter which can be heard through the speakers, and occasionally when I touch the tonearm. There is no hum and everything sounds fine when a record is playing, but as far as I can tell the chassis is not grounded to anything which I’m hoping once this is done could solve the static issue. I tried running a ground wire from this chassis lug to the same lug on the preamp that the tonearm is grounded to which did not resolve the problem. 

Can anyone help me resolves this. I don’t get static from my Thorens or Rega tables, so I hope this is specific to the Sota turntable and can be easily fixed.


mcwatson

Showing 4 responses by yogiboy

The 3 prong outlet is grounded. The 2 prong outlet is not grounded.
Use the 3 prong outlet!
If you want to ground directly to an outlet you will wrap a wire around the screw that holds the outlet cover to the outlet. That should be a good ground source. It looks like this!

https://www.zoro.com/hubbell-wiring-device-kellems-duplex-wall-plate-1-gang-silver-ss8/i/G3440123/?m...


I doubt that the 3 prong outlet is grounded. Over the years it was most likely replaced and someone used a 3 prong outlet ( with no ground ). You should have it checked out . An inexpensive voltage tester like this will verify if that outlet is grounded!
https://www.homedepot.com/p/Power-Gear-90-300-Volt-Circuit-Tester-52060/203744891?mtc=Shopping%7CG%7...