There are 3 fuses in the DC012. One is on the reverse side of the PC board which is located on the back side of the battery compartment. The other 2 are located on the power supply board. One is a glass tubular type, the other is a round cylinder plastic case soldered to the board. The amperage is clearly printed on the PCB: 1.6 amp and a 2.5 amp. Since the radio plays on battery power, it's probably not the one on the battery compartment and more likely to be the glass cartridge fuse; but, I'd check all 3 fuses to be certain. Other components could also be suspect including the transformer (120 VAC primary in with 14.5 VAC secondary output).
All electronic components contain smoke, the mystery is how to release it!
C.J. in VT, November 2016