Humming on Phono Channel: Kontrol S4 Mk3

CageyBee Member Posts: 1 Newcomer

Hi All,

A few months ago I upgraded from a Kontrol S4 MK1 to S4 MK3 and all working well until I recently started playing vinyl through it - I can hear a hum and the VU meters are also picking it up. This is happening on both Phono channels (A & B).a

I've done the usual things of disconnecting/reconnecting all cables including the ground wire (Technics SL1210's), but it's still happening.

I need to digitize some vinyl which I can't do while this is happening, so I have had to switch back to my old MK1 (luckily I haven't sold it yet) and it's working fine with no humming, so I know it's not my laptop, power supply, cables or turntables.

Do I have a faulty unit, or is there some kind of setting that I'm missing? To switch to phono I hit SHIFT + Line/Phone buttons.

Many thanks.


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