1991 Honda Accord Deck

Okay, so everytime I go over a speed bump, or go and take a turn my sound system will turn off. and it will act like its playing through the deck but no sound will come out. I think also when I accelerate on the gas I think that kinda turns it off also. I cannot figure out the problem. I think its something behind the deck or maybe the wires are not connecting all the way or something.

Please help!!!

Thanks