Recently I've worked a lot to get our Saab Safir  airworthy but last night I finally got a chance to get back in my workshop to work with electronics again. The reason that forced me back to my workshop was that the COMM / NAV radio of the airplane suddenly decided to stop working ...

Note the frequency of Eskilstuna/Kjula (ESSU) AFIS tuned-in on the radio

It's been years since last time I worked with old analogue radio equipment so I was a bit unsure if I would be able to fix the radio. However, the fault turned out to be a bad capacitor that short-circuited the power supply to ground so I managed to repair the radio rather quickly ...

Internals of the COMM / NAV box. Note the large frequency selectors to the right in the picture ... I really love vintage electronics!