I followed Charles Steinmetz's troubleshooting procedure for AGC issues and the following resulted after tuning to a very strong BCB station:
Voltage Terminal 3 & 4: -0.37V - not good Then step 2: Resistance Terminal 3: 460k - maybe passable Resistance Terminal 4: 24.6k - horribly off spec So, my problem is most likely in "any of the several dozen bypass caps on the AGC line in the IF and RF sections, or leakage to ground in one or more of the mechanical filters". Now my ignorance shows up. How do I identify what are bypass capacitors? I assume that these are capacitors that go to ground? I also note that, on the very strong BCB station, I get no sound output until the RF gain is up to 8, if that helps narrow down where I should start searching. Thanks in advance for any help. Regards, ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
