Connex 3300 240-Channels Base CB Radio "external speakers plugged wont work" Questions

...wont work either,i have tried a different mike and when you key it up the meter still won't swing. Plug in an external speaker to the pa jack ... Switch the band selector to pa and see if you hear ...

...external speaker back in... I key it up and then it will last about 15seconds and then it wont squeel again until i key up again... what could be doing this... I have tried different speakers and ...

external speakers and i could hear myself speak, but nothing else, no static or anything. I tried messing with the buttons and the squelch. I made sure it was on CB instead of pa. I'm not sure