Hi there. We are also experiencing audio issues through the SDI inputs. However we have managed to establish at least 2 camera mic sources. When we connect three cameras via SDI we can only hear 2 camera mics NOT 3 !
It appears that no matter what settings you select there is just no audio via SDI 3 and SDI 4.
And as for the analogue XLR inputs (4 pairs) don’t even go there.
This mixer is flawed with design issues. Its a real pig to set up and the manuals tell you nothing.
PLEASE ! someone from Panasonic jump on to this and advise us.