The general concept of my radio is that the battery pack is taken out of the radio casing into an external, removable key that when inserted into the open top of the new body, connects up the circuit and turns it on. After this, when the key insert is twisted, it controls the volume of the radio. The idea behind this was to make it easier for an old aged user to interact with the radio without small inconvenient and unnecessary buttons.
Here is a link to a short demonstration video of the final prototype.
Step 1: Radio Overview
The radio is cuboidal, measuring around 750mm wide x 1200mm high x 250mm deep. To dismantle the radio I first removed all the external screws. Then, with a flat screw driver and knife, gently went around the centre divide slowly prising the casing open, being careful not to damage any of the internal components. The radio circuit board is held down with two small clips that when pulled back loosens the parts allowing the circuit board to be taken out from the case. The small speaker cone was glued to the inside of the front casing, later on to get it out I slightly cut through the glue and pushed though it popping it out with out any damage.