On Apr 15, 5:14*pm, ContestID67 wrote:
The MicroAire radios have an internal "pico" fuse that protects the
unit from reversed power. *Ask me how I know ;-) *Maybe the Becker has
the same thing.

A pico fuse is about the side of a 1/8w resistor (grain of rice) and
is soldered inside the unit. *It is not considered user repairable/
replaceable. *While I have been able to replace the fuse, it isn't a
task for the uninitiated without a good small wattage, small grounded
tip, soldering iron. *Too much heat and you can lift a trace or scorch
the board. *Too big of a soldering iron tip and you might unsolder
more than you intend. *A bit of a static spark and the device goes
poof. *Sorry to scare anyone but you don't want to toast a very nice
radio.

One time I saw a 1943 Buzzard-Master - someone hooked up
the battery backwards and there was a giant flash from
under the panel ! Maybe look under the panel for one of them
old-style screw fuses and put a penny in there ?