My guitar doesn't make any sound on normal volumes with clean channel but it can be hard properly with either cranking the clean or using high gain, so what's the problemo?
sounds like you either have a bad ground connection or your solder on you pot is loose and getting a bad connection.
could it be that the volume on the guitar is stuck at zero? I've noticed when you get a guitar and turn the volume pot right down then play it, you can sometimes still get a very faint sound.
dry solder joint. happened to my LP when i rewired it.