the volume potentiometer of my 7-String Scheckter Banshee Elite-7 FR S is defect!
I will have to replace it.
Up to now I could not find out what poti it is.
Does somebody know something about the details of it!
Okay, so I am not a professional at this sort of thing. I understand you are having issues with your volume pot and I've dirty pots before but, you didn't specify your issue. So, before you try and replace it the only thing I can recommend is that you blow it out with a can of air duster.
Also if you do have to replace it, just looks like a standard Alpha 500k audio taper pot from Korea. Don't buy a CTS pot as it most likely will need drilling to fit.