kwyn Posted April 8, 2023 Share Posted April 8, 2023 My C3 (59 I think) has been motorboating for years. I zapped the scanner once and it fixed it. Problem came back as expected so I knew I'd have to have the scanner rebuilt. I keep meaning to. just haven't got around to it yet Anyway, yesterday all of a sudden, the C/V works just fine. Any ideas why this would happen? Quote Link to comment Share on other sites More sharing options...
Outkaster Posted April 8, 2023 Share Posted April 8, 2023 That is strange if you zapped it but it can work. You might still need it rebuilt. Quote "Danny, ci manchi a tutti. La E-Street Band non e' la stessa senza di te. Riposa in pace, fratello" noblevibes.com Link to comment Share on other sites More sharing options...
mate stubb Posted April 8, 2023 Share Posted April 8, 2023 I have seen this happen before. The little metal fingers that grow can move if the organ is jolted or moved. I've been able to clear some organs by zapping, and others needed the scanner popped out, opened and cleaned. You can actually pull the scanner off the end of the run motor and open for cleaning without unsoldering any wires. 1 Quote Moe --- Link to comment Share on other sites More sharing options...
kwyn Posted April 8, 2023 Author Share Posted April 8, 2023 10 minutes ago, mate stubb said: I have seen this happen before. The little metal fingers that grow can move if the organ is jolted or moved. I've been able to clear some organs by zapping, and others needed the scanner popped out, opened and cleaned. You can actually pull the scanner off the end of the run motor and open for cleaning without unsoldering any wires. Now that you mention it, I did just move it to the other side of the room. Quote Link to comment Share on other sites More sharing options...
mate stubb Posted April 8, 2023 Share Posted April 8, 2023 It may return, but you've bought yourself some time! For future reference, check this out: https://bentonelectronics.com/servicing-the-hammond-vibrato-scanner/ Quote Moe --- Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 10, 2023 Share Posted April 10, 2023 I recently purchased a Hammond B2 that was not working. The owner had partially disassembled the scanner and motor. He stated it had been making a loud cyclic squeak. I rebuilt the scanner per the the Benton website article. After putting the scanner back in, the B2 is still making the cyclic audio squeak. Any ideas anyone?Thanks, Kelly Quote Link to comment Share on other sites More sharing options...
mate stubb Posted April 10, 2023 Share Posted April 10, 2023 3 hours ago, Kelly Gibson said: I recently purchased a Hammond B2 that was not working. The owner had partially disassembled the scanner and motor. He stated it had been making a loud cyclic squeak. I rebuilt the scanner per the the Benton website article. After putting the scanner back in, the B2 is still making the cyclic audio squeak. Any ideas anyone?Thanks, Kelly Dry bearing in the generator? Maybe oil the organ if it's not been done in awhile. Quote Moe --- Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 10, 2023 Share Posted April 10, 2023 I should have been more clear on my description. The squeak is in the audio, I don’t hear a mechanical noise. The generator is fairly quiet. It is a high-pitched cyclic tone and I suspect it is related to the vibrato/chorus scanner. Also, the tone changes when the vibrato/ chorus switches are used. I guess it could also be in the generator. thanks Kelly Quote Link to comment Share on other sites More sharing options...
mate stubb Posted April 11, 2023 Share Posted April 11, 2023 Tone should get a bit brighter when using CV - that's by design. Microphonic preamp tube? I'm just speculating because I can't hear it. Can you post an audio clip? Quote Moe --- Link to comment Share on other sites More sharing options...
KuruPrionz Posted April 11, 2023 Share Posted April 11, 2023 1 hour ago, mate stubb said: Tone should get a bit brighter when using CV - that's by design. Microphonic preamp tube? I'm just speculating because I can't hear it. Can you post an audio clip? I was going to suggest checking the tubes, good call! Quote It took a chunk of my life to get here and I am still not sure where "here" is. Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 11, 2023 Share Posted April 11, 2023 Here is a recording of the audio output from my B2. New Recording 3.m4a Thanks Kelly Quote Link to comment Share on other sites More sharing options...
KuruPrionz Posted April 11, 2023 Share Posted April 11, 2023 37 minutes ago, Kelly Gibson said: Here is a recording of the audio output from my B2. New Recording 3.m4a 79.09 kB · 32 downloads Thanks Kelly Yikes! Something is not happy. That is well beyond my pay grade. Might be time for a tech visit, unless you are a tech. I left a Hammond M1 in Fresno, didn't want to deal with it. Had that Hammond sound! Quote It took a chunk of my life to get here and I am still not sure where "here" is. Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 11, 2023 Share Posted April 11, 2023 I’m definitely not a tech, I know just enough to be dangerous. I’ll keep working on it. I’d rather be playing it. Quote Link to comment Share on other sites More sharing options...
Jim Alfredson Posted April 11, 2023 Share Posted April 11, 2023 It sounds like a tonewheel that needs oil. That will creep into the audio because there's a big pickup right above every tonewheel. When was it last oiled? 1 Quote Keep it greazy! B3tles - Soul Jazz THEO - Prog Rock Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 11, 2023 Share Posted April 11, 2023 The B2 was sitting in a garage, probably for many years. I have just oiled it a few days ago as I was putting the scanner back in. It did appear to be dry. A tonewheel makes sense as a possible source. I’ll take a look at the generator. Thanks! Kelly Quote Link to comment Share on other sites More sharing options...
elif Posted April 11, 2023 Share Posted April 11, 2023 Does it make the noise with no keys pressed? No drawbars pulled out? With CV off? Quote Link to comment Share on other sites More sharing options...
Kelly Gibson Posted April 11, 2023 Share Posted April 11, 2023 Yes, It makes the sound with no keys pressed, no drawbars out, and vibrato/chorus off. The sound does change a little while switching the vibrato switches . The Keyboard still produces sound when drawbars are pulled out. The squeaking noise is very loud. Much louder than the keyboard sound. thanks Kelly Quote Link to comment Share on other sites More sharing options...
Threadslayer Posted April 12, 2023 Share Posted April 12, 2023 I have nothing helpful to add, but what a great idea to ask for an audio clip to run by the local experts here. Quote Whenever you find yourself on the side of the majority, it is time to pause and reflect. -Mark Twain Link to comment Share on other sites More sharing options...
bill bosco Posted April 13, 2023 Share Posted April 13, 2023 we had had a bearing go on a C2 , as i remember it was more of a screeching sound . but yours does sound related to a bearing considering the pulse sounds in sync with the generator RPM . with ours , the bearing was spinning in the chassis . i was later told it was fixable , don't know about that . luckily we had another generator from a spare organ and swapped it . Quote Link to comment Share on other sites More sharing options...
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