One channel does not output to any mix

I am having a problem getting sound from channel 1 of my QU16 to any of the mixes. I have nice healthy signal on the meters. It’s the kick drum mic. If I plug the mic into channel 2, I can hear the sound fine on all of the mixes. Plug the mic back into channel 1 and no sound. I searched every menu and selection and both channels are set the same as far as I can tell. Please help.

Are you sure the channel is assigned to the chosen mix (P24 of manual)

Select Ch1 and then go to the routing screen, that will show you
all the assignments and levels.

Also…you can check the channel assignment by holding down the green
assign button on the left hand side of mixer surface, while holding that
down select each mix via the blue mix button, as you select the mixes
the select buttons for the channels that are assigned to the selected
mix will light up.

Hitting the channel select button while holding the assign button will select
or de-select the channel from the mix you have selected.

Check there’s no mute group or DCA involved?

When you say mixes does that also include the main L R or just
the mix aux outputs.

Thanks it was the assign button on the left of the channels. Channel 1 was not assigned to any mix.

The assign button is just one of few way to assign a channel to a mix and it gives you a quick visual of what is assigned or unassigned.