I had a similar issue on sunday 02-06-19, After upgrading to firmware 1.4 seemingly random channels stopped outputting audio. This included Matrixes, IP channels etc. The issue presented as, signal was getting into the channels or martixes however it wasn’t passing the “insert” stage. None of the inserts were in use and in fact the inserts in every case were ‘Unassigned’. To resolve the issue, I selected the channel, went to insert, assigned an empty insert to the channel and hit apply. This meant that audio now would pass the insert stage and you could get signal out of that channel. I then selected the insert again and set it back to ‘unassigned’ and hit apply, audio continued to pass the insert stage and the issue was gone. I then saved and power cycled the console and the issue didn’t return.
Hopefully this is helpful for anyone else having this issue with the new firmware until it is resolved by Allen & Heath.
