the front panel is removable , most of the electronics are mounted to the back case i.e the cassette mech tuner and amp boards , remove the screws from the back case might be one inside the battery box ,you do have to remove the cassette door cover , the eq sliders and the tuning knob to get the two halves apart there is one plug that from the speakers in the front case to the amp board just unplug that and you should be able to fully separate the halves , this box is very easy to work on.