Yamaha MG 12/4
^ These desk by Yamaha are nice, I've used one of several occasions for live stuff but not recording.
As for the current mixer issue, other than suggesting you double check that you are using the main mix output and everything is turned up thats all I can think of at the mo.
BTW: Didn't mean the above in a rude way but I sometimes stand at mixers going "why won't this work" and i've got master down or something simple like that.
Hope that helps.