Buzzing TV - help

[Gazzab]

I have a beovision 7-32 with a beolab 7.1 - it is connected to a freesat box but via scart :-(. Anyway it has started buzzing but the buzzing comes and goes almost like it relates to the tv signal / modulating....
I have played with the cables, the sat cable is fine I'm sure...any ideas? I'd rather avoid a b&o engineer bill if I can help it. I might swap the satellite box tomorrow and the scart cable. It doesn't have hdmi.
Any thoughts ...?
Thanks

[1point7bar]

How loud is the freesat audio output signal set?

[Gazzab]

Dunno by just changed the freesat tv scart setting from rgb to s-video and it's 75% better. I'll try and find a volume setting...

[Gazzab]

Seems to be ok if you turn down tv volume an increase freesat box volume.