I have a few questions about a Crate Taxi TX30E that I recently acquired.

Right now I get no sound out of the speakers at all. I opened the amp up and measured the resistance across the 8 inch speaker and the tweeter. The speaker measured 8 ohms but the teeter was infinite. I took the tweeter out and noticed that something was rattling inside it. I checked it with a nine volt and am pretty sure it's blown.

Even if the tweeter is blown, I should be still getting sound out of the 8" speaker, right?
The power LED lights up when I plug in the power adapter, but the charging LED for the battery does not.

Also, I tried plugging in some headphones into the headphone jack and got no sound from there, either.

I'd like to get this amp running again, can someone point me in the right direction?