Traxxas TQ3
 

I just got this radio system in a trade recently. I just wanted a cheap radio system to use but there is something wrong with it. Sometimes when I use it it works and other times it doesn't, it works for like 10 seconds and then stops, when I smack the battery tray it works again and then stops again after 10 seconds. I can't drive my truck with the radio like this so does anyone know what maybe causing this problem? Thanks.