02-20-2006, 11:15 AM
Thanks- BC had been working pretty well, other than volume, before the breakdown- Is there a possible capacitor or resistor which may have overloaded and blown in the BC circuit only, as a result of strain due to passing signal through the 3,300M Ohm resistor that was in place of the 330K number 46? Something that affects only the BC band? I've checked those I can see, but am not sure which would be which: I am still learning how they all work together, but am still having trouble following how each circuit goes- I tried to follow a path on the schematic from antenna to speaker, and only confused myself worse!
Everything else has been checked and rechecked- I cleaned all the contacts in the wafer switches well, and went through all the coils, etc. during the 2nd teardown. The 16-16A-10-4 adjusters are about the only things which haven't been torn down, although they have been cleaned somewhat. But they had been working previously! I just can't seem to get them to align properly. I get squaks burrs, and squeals at intervals across the dial on BC.
The other SW band is coming in ok now, too- daylight hours- Even listened to one of the UTC time tone stations, it was between 14.8 & 14.9, although I don't remember where it should be, and I did not hear a station identifier. But it was not one of the Canadian ones: voice was in US English only. I also was picking up WYFR, Okochobee, FL around 12.5, and Radio???Espana up near 16, so I think the two SW's are close to where they should be.
Thanks again!
Scott
Everything else has been checked and rechecked- I cleaned all the contacts in the wafer switches well, and went through all the coils, etc. during the 2nd teardown. The 16-16A-10-4 adjusters are about the only things which haven't been torn down, although they have been cleaned somewhat. But they had been working previously! I just can't seem to get them to align properly. I get squaks burrs, and squeals at intervals across the dial on BC.
The other SW band is coming in ok now, too- daylight hours- Even listened to one of the UTC time tone stations, it was between 14.8 & 14.9, although I don't remember where it should be, and I did not hear a station identifier. But it was not one of the Canadian ones: voice was in US English only. I also was picking up WYFR, Okochobee, FL around 12.5, and Radio???Espana up near 16, so I think the two SW's are close to where they should be.
Thanks again!
Scott
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