06-21-2016, 07:57 AM
I was at my bench last night working on a replacement loop antenna on a GE 107. I was getting along OK till I noticed that even with the loop detached that the speaker was emitting a crackle/static. I'd tap the speaker and it would stop. Eventually the radio stopped playing stations altogether.
Now, the speaker only makes a faint hiss regardless of volume settings (his does get louder with volume increase). When I adjust the volume I get sporadic bursts of static and the pilot light dims. When testing pin voltages the speaker crackles (the voltages all look good). When I touched the volume pot with my multimeter I get static....
Any suggestions? Speaker shot (it still makes noise)? Audio transformer? Volume pot? Oscillator coil...mine has 4 terminals and 3 have continuity between themselves while the fourth has no continuity to the other three. I don't know if that's right. Something else?
Now, the speaker only makes a faint hiss regardless of volume settings (his does get louder with volume increase). When I adjust the volume I get sporadic bursts of static and the pilot light dims. When testing pin voltages the speaker crackles (the voltages all look good). When I touched the volume pot with my multimeter I get static....
Any suggestions? Speaker shot (it still makes noise)? Audio transformer? Volume pot? Oscillator coil...mine has 4 terminals and 3 have continuity between themselves while the fourth has no continuity to the other three. I don't know if that's right. Something else?