External Speaker is not working. Headphones work fine.

I replaced the power, volume up down cable on the Ipod touch 4th generation. Since then the external speaker does not work. Plugging in to the headphone jack works fine. I tested with another internal speaker and got the same results. The only thing I have done so far is unplug the headphone jack from the board to see if the iPod thought headphones were plugged in. Does anybody have any other suggestions?

Thanks,