Mort2376

Hi Folks, Newbie here so please be gentle. Got an issue with 1 of our betapack 1's. Channel 3 if you turn it on via demux or analogue desk it comes on to about 60% but brings CH4 on with it to 60%. Same applies if you bring up CH4 first. But if you bring both 3 and 4 up both come on to 100% when full Is this something simple ? Thanks in advance.