PCB

I should start by saying that this is my first time trying to repair my own electronic device but I have all relevant tools and am wanting to learn. Money is tight right now but time is abundant. I have already been in contact with Sanyo's repair line and, needless to say, they weren't any help...

My jbl xtreme power connection as seen in the pictures has came undone. I can push it back into it slot and occasionally it will get a connection and turn on. It doesn't seem to keep connection. So my question is how would I go about fixing this? Could I fix this myself with little electronic...