30-03-2015, 03:42 PM
(27-03-2015, 07:59 PM)Old Sparky Wrote: As I noted, the N/P means that the polarity is reversible by changing over two wires inside the set. Apart from the speaker connections, the only other lead fitted by the makers, IIRC, was the power supply one, which should include an in-line fuseholder with a(from memory) 5A fuse. An earth wire (the thick black one?) screwed directly to the chassis may have been fitted at some point. I do have the service manual somewhere, if more info. is needed. Be sure to check the polarity before applying power to the 108.I'm gradually getting a bit more experience now although I guess I need at least 2 more years behind me. I had a Bush transistor radio yesterday that was stone deal like the Radiomobile. I stripped it down further than the Radiomobile and tested the speaker. That was O.K. Finally, I by-passed the normal battery holder supply wiring and it came to life. With the Radiomobile it may go a bit deeper than that, probably the transistor kaput.
Thanks for your insight. I'll be sure to pick your brain when I set to work on the Radiomobile. Just as you did, I think I'll need to rewire and maybe even change the odd component.
Yesterday's fix was very rewarding, The Bush radio hadn't run in years and was covered in flakes and fluff. Many of these sets have very simple faults. The guy who taught me via his book Chas Miller states in one of his chapters that many times he made a repair when the solution was often so simple.
