Plugged our Microair into a battery the wrong way 'round, did we? Been there, done that at least three times (yes, I am that stupid). The good news is that each time, it only cooked the picofuse and did no other damage.

The internal fuse (picofuse) is very easy to fix yourself. First you take out all 12,000 screws that hold the cover on. When you have the cover off, look for the picofuse in the top right rear corner of the radio (if I remember correctly). It looks a lot like a resistor. It will be obviously burned if it is blown. It is a very common part, so your local electronic parts dealer should have them in stock. Clip the picofuse off by cutting the legs near the body of the fuse. This will make soldering on the new fuse much easier. Solder the new fuse to the legs of the old fuse, bending it over a bit to make sure it is not sticking up in the way of the cover. Replace the cover with the 12,000 screws. Swing a dead cat over it, say "Arise" and your radio should live again.