Did this with my M3 which has been stuck for DECADES!!! I now have chorus function restored!! Removed the 4 mounting nuts, supported the unit and shaft on wood blocks, removed two cover screws, the contact and gently taped screws out of the way. A couple ml's of lighter fluid a couple times while working the scanner and it was spinning freely within a day. I was able to see scanner spin while turning the scanner shaft to ensure clutch mechanism was good. Didn't have to touch any wiring! GREAT TIP - THANKS!!!
Excellent! Hey, do us all a favor next time and film in LANDSCAPE mode so we can actually SEE more of what you're doing. But the tips and tricks were excellent.
Nice trick! The last two organs (A100 and B3) that I purchased had frozen scanners. It's funny, but I have been repairing these things for decades and never used to see this. Usually, when the scanner is frozen it needs a total tear down and cleaning. I have found the best way to clean the washers is with lacquer thinner. I use soap and water on the pole pieces to keep the VOC waste down to a minimum. Once the scanner is reassembled it is a good idea to check each pole for continuity - there should be no continuity between the pole pieces and the body of the scanner. This fault will cause the "motor boating" sound. Also, shocking the pole pieces with 18 vdc (two 9 vdc batteries in series) will eliminate crystals that cause shorts. I usually shock the scanner after it is reassembled just for insurance.
I did end up rebuilding the scanner mush as you describe, but I used acetone as a cleaner. i kind of regret it because it is quite harsh, but I don't think there was lasting damage. I bought another scanner, motor and start motor through Ebay for $30 as insurance. They are quite cheap. I guess because so many Hammond models used the same scanner.
Thanks for sharing! I NEED HELP!! When my Vibrato switch is OFF, the sound gets very faint. But when the vibrato switch is ON the sound is normal. I zapped my scanner with 18v and it did improve the sound drastically but didn’t fix. Any suggestions? Thx
I have a T-412 with a frozen scanner, but access isn't like the B3, or even like the T-443 I used to have. It'll be a bit of work getting to it, but thanks to you, I now have a pretty good idea what to do once I get there, without having to take apart and rebuild the scanner itself. I suppose I still might eventually rebuild it, based on your reply to Mike's comment. Seems like it might be necessary sooner or later anyway.
I did rebuild mine, but only because I had to remove the whole tone generator. I didn't hear that much improvement after the rebuild in any case. Before you give up, try putting the lighter fluid or naptha into the lubricating tub with the wicks going to the vibrato scanner. It may take a while, but it should wick into the scanner and loosen the petrified oil that is making it stick. Once it is free, go back to normal oiling protocol.
Definitely be careful but lighter fluid or camping fuel is not as combustible as gasoline, it is a bit oily. But the nice part is that it dissolves gummy stuff and evaporates to nothing in a day or two.
I don’t know about any in Massachusetts but I have been thinking of selling my almost perfect condition A102 with or without Leslie 147. You can email campbellrude@gmail.com for more details and pictures. If you are interested I can help with delivery.
Thank you Leslie!!! This was exactly what I needed to free up the scanner on my 1962 A102! This technique was much easier than tearing down the whole scanner! Spinning free!
![โรงเรียนห้ามรัก โดนจับได้ตาย...!! [เอิร์นไดเม่]](http://i.ytimg.com/vi/4u02Sbr556Q/mqdefault.jpg)
Did this with my M3 which has been stuck for DECADES!!! I now have chorus function restored!! Removed the 4 mounting nuts, supported the unit and shaft on wood blocks, removed two cover screws, the contact and gently taped screws out of the way. A couple ml's of lighter fluid a couple times while working the scanner and it was spinning freely within a day. I was able to see scanner spin while turning the scanner shaft to ensure clutch mechanism was good. Didn't have to touch any wiring! GREAT TIP - THANKS!!!
woops - taped "springs" out of the way.
@@c3banjo happy this worked out!
Thanks for the great video. I believe my scanner is also Frozen and I will address it very soon.
Excellent!
Hey, do us all a favor next time and film in LANDSCAPE mode so we can actually SEE more of what you're doing.
But the tips and tricks were excellent.
Nice trick! The last two organs (A100 and B3) that I purchased had frozen scanners. It's funny, but I have been repairing these things for decades and never used to see this. Usually, when the scanner is frozen it needs a total tear down and cleaning. I have found the best way to clean the washers is with lacquer thinner. I use soap and water on the pole pieces to keep the VOC waste down to a minimum. Once the scanner is reassembled it is a good idea to check each pole for continuity - there should be no continuity between the pole pieces and the body of the scanner. This fault will cause the "motor boating" sound. Also, shocking the pole pieces with 18 vdc (two 9 vdc batteries in series) will eliminate crystals that cause shorts. I usually shock the scanner after it is reassembled just for insurance.
I did end up rebuilding the scanner mush as you describe, but I used acetone as a cleaner. i kind of regret it because it is quite harsh, but I don't think there was lasting damage. I bought another scanner, motor and start motor through Ebay for $30 as insurance. They are quite cheap. I guess because so many Hammond models used the same scanner.
Thanks for sharing!
I NEED HELP!!
When my Vibrato switch is OFF, the sound gets very faint. But when the vibrato switch is ON the sound is normal. I zapped my scanner with 18v and it did improve the sound drastically but didn’t fix.
Any suggestions? Thx
I have a T-412 with a frozen scanner, but access isn't like the B3, or even like the T-443 I used to have. It'll be a bit of work getting to it, but thanks to you, I now have a pretty good idea what to do once I get there, without having to take apart and rebuild the scanner itself. I suppose I still might eventually rebuild it, based on your reply to Mike's comment. Seems like it might be necessary sooner or later anyway.
I did rebuild mine, but only because I had to remove the whole tone generator. I didn't hear that much improvement after the rebuild in any case. Before you give up, try putting the lighter fluid or naptha into the lubricating tub with the wicks going to the vibrato scanner. It may take a while, but it should wick into the scanner and loosen the petrified oil that is making it stick. Once it is free, go back to normal oiling protocol.
I believe the T100 through T500 series has a drum scanner. A very different animal.
Do you have a video on how to access that bearing? I wanna take it out but don’t wanna break it
I’m too scared to spray lighting fluid in there. I’m afraid it’s going to explode 🤯 or something
Definitely be careful but lighter fluid or camping fuel is not as combustible as gasoline, it is a bit oily. But the nice part is that it dissolves gummy stuff and evaporates to nothing in a day or two.
@@RestLes Yes. Also your syringe method puts a very tiny amount of fluid. A fraction of a milliliter (cc).
Do you know of anyone who has a Hammond a100 in the Massachusetts area
I don’t know about any in Massachusetts but I have been thinking of selling my almost perfect condition A102 with or without Leslie 147. You can email campbellrude@gmail.com for more details and pictures. If you are interested I can help with delivery.
Thank you Leslie!!! This was exactly what I needed to free up the scanner on my 1962 A102!
This technique was much easier than tearing down the whole scanner! Spinning free!