no sound

I just got the above mentioned guitar this past week, and the top switch position has no sound at all. I'm extremely new to guitars, so I have no clue what it could be. I have a cheap, old amp and cable that I'm using that were given to me 12 years ago when I was thinking about learning, so...

Hi all! Just received my 1st PRS guitar, an Alex Lifeson Signature Model A15E. Unfortunately, it does not send sound from the jack to my amp when plugged in all the way. If I plug it in partially it does send sound. Could this be due to a low battery? Or is it something else, possibly more...