Makita dab bmr101 no power ?

Hi there. My makita dab bmr101 radio seems to have blown up on me and now it won't turn on with either a battery or mains cable? It was me who made this happen, the volume knob had broke off so I put my screwdriver inside to adjust volume whilst the radio was still on and then something popped and now it won't work?? I've replaced the internal volume control switch ( encoder assy) as this had snapped off originally but to luck .....