4k mix buss noise/buzz. Maybe logic or power related??

[Stefan Boman]

Hey!

New to this forum(which seems excellent!!)

Just swapped my old Neve V3 for a 4kE with a G computer. Good times 

I get this noise/hum/buzz on the right side mix buss.
Sometimes it comes after a while. And the noise is changing character slightly when muting more and more channels.
So the noise gets louder and more apparent the more channels that are muted. 
Any idea on where to start?

[sintech]

Hi, try swapping the LF and RF 026 cards in the centre section, and see if the problem goes to the lefthand side following the cards.

If it's a 4k, you should have 4x 026cards, two for the front, and a pair for the back, so in theory you can borrow one for the back.

Just incase you don't know.. power off the 651 centre before lifting it up.

[sintech]

If the consoles been moved, the centre cards may need reseating.

[Stefan Boman]

Thanks!

I'll try to swap them around.
The console has been moved but I noticed the problem at the previous owners place, so it's probably not because of that.

Cheers!