Originally posted by chony:
I did as you all instructed. I cleaned out the headphone jack - and it seems to be working along with the PA outputs.
Without changing the wires however, I realized that the problem is not with the speaker, as the right hand tweeter - which is not connected to the woofer - is also not working.
Based on what you said, it seems likely that (as Mike mentioned) one side of your headphone jack's speaker-switching contacts are not working. Don't be convinced otherwise just because headphones work on both channels; they will, even if a speaker connection isn't properly made when the headphone plug is removed. How did you clean the headphone jack?
Of course, it's remotely possible that both the woofer and tweeter are bad on one side, but that's less plausible than the headphone jack switch contacts acting up.
--Barry