sometimes the radio speaker jack sticks in the position that it opens too when a speaker is plugged into the radio. Take a speaker plug and push the plugs back and foirth in the socket. The same thing happens on some Baofeng radios. The speaker plug just sticks in and open position rather than a cloesd position. Did the kids stick something like food, or a pencil in the socket, if they touched it, not much harm., unless they got something in the jack.