Try the suggestions above but also realize that some cartridges hum with the VPI setups - Grado even makes a special line for the VPI's to prevent hum. I have an Aries and there were just some cartridges I needed to avoid - I am not familiar with the Helikon. You may want to call someone at the Elusive Disc for more input on this. What were you using before?
Is it the cable or the cartridge or????
I just installed a Helikon into my Aries/JWM 10.5 set-up. I am using an ARC PH3se phono....there is plenty of gain but I've noticed a hum when I lift the arm off the record before muting (I know...must not do)......could it be the arm cable???? The VPI 10.5 uses RCA to RCA so I am using a Nordus Blue Heaven cable. Any suggestions or recomendation??? Thanks all!