Hey Tom,
A few things to think about:
1. Electrolytic capacitors are usually lifetime limited. A good many are
probably bad. If you have a capacitor in series with the output signal (to the
speaker) this is somthing that I would suspect, although the "click" indicates
that this is working.
2. The volume control (the potentiometer or "pot") is another suspect part.
This part works with a metal wiper which runs across a resistive element.
Without use, oxides will often form which cause problems.
My recommendation is to hook up the radio to 12 volts and try again. Don't
worry about getting a radio station just yet, the point here is to get some
signal (even noise) out the speaker. Rotate the volume control up and down
many times. This sometimes works, and you may hear noise/clicks/hiss. Another
approach is to open the radio
chassis so that you can spray some contact cleaner into the pot. But try the
first appraoch first. And be careful with contact cleaner, some formulations
can melt plastics.
Good luck.
-Roger
Thomas Wiencek wrote:
> I have two positive ground Motorola radios. I hooked them up last night to a
>battery and neither one worked. The light came on and the speaker clicked but
>no sound. I checked the antenna and it was good. Any ideas what the problem
>is? Is there a part (main transistor on the back of the case?) that usually
>goes bad. Thank you.
> Tom
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