Re: Locating a Defoaming expert
Thanks Scott!? Detroit is doable. I’m near Ottawa and retired. ? ? Sent from for Windows 10 ?
toggle quoted message
Show quoted text
From: Scott HawthornSent: Thursday, June 2, 2022 12:14 PM To: [email protected]Subject: Re: [hammondzone] Locating a Defoaming expert ? If you are anywhere Detroit then John Doyle is your man. On 6/2/2022 9:11 AM, jean duplanty via groups.io wrote: Hi everyone! I own a 1966 B3. I bought it 30 years ago and I had no idea what I was buying. A few years later, I found out about the foam issues that some owners were having. All was good for me except for one day a technician came to move the buss bars and told me about the one problem note on the lower manual. It didn’t bother me at all being the amateur that I am. To me, it still sounds good right there now but then, ?I am thinking maybe it’s time I take this thing in for a good overall. Afterall, she is 55+ years old and there is this 20 year time span where I have absolutely no clue where/who owned it and what was done to her mechanically or technically inside. ? I am looking to take it down to the United States where there are lots of techniciens. However, which ones are the reputable ones? Here in Canada, techies are far and few between and many are hobbyists. Not what I would be looking for to care for my gal. There is only one place, Keyboard Exchange Intl, who advertise selling organs and guarantees them “foam free” but they are way down in Florida. If anyone in this group has had defoaming work done on their Hammond in the USA, I appreciate your input good or bad. ? ? Cheers, JD ?
|
Re: Locating a Defoaming expert
If you are anywhere Detroit then John Doyle is your man.
On 6/2/2022 9:11 AM, jean duplanty via
groups.io wrote:
toggle quoted message
Show quoted text
Hi everyone! I own a 1966 B3. I bought it
30 years ago and I had no idea what I was buying. A few years
later, I found out about the foam issues that some owners were
having. All was good for me except for one day a technician
came to move the buss bars and told me about the one problem
note on the lower manual. It didn’t bother me at all being the
amateur that I am. To me, it still sounds good right there now
but then, ?I am thinking maybe it’s time I take this thing in
for a good overall. Afterall, she is 55+ years old and there
is this 20 year time span where I have absolutely no clue
where/who owned it and what was done to her mechanically or
technically inside.
?
I am looking to take it down to the United
States where there are lots of techniciens. However, which
ones are the reputable ones? Here in Canada, techies are far
and few between and many are hobbyists. Not what I would be
looking for to care for my gal. There is only one place,
Keyboard Exchange Intl, who advertise selling organs and
guarantees them “foam free” but they are way down in Florida.
If anyone in this group has had defoaming work done on their
Hammond in the USA, I appreciate your input good or bad. ?
?
Cheers,
JD
?
|
Locating a Defoaming expert
Hi everyone! I own a 1966 B3. I bought it 30 years ago and I had no idea what I was buying. A few years later, I found out about the foam issues that some owners were having. All was good for me except for one day a technician came to move the buss bars and told me about the one problem note on the lower manual. It didn’t bother me at all being the amateur that I am. To me, it still sounds good right there now but then, ?I am thinking maybe it’s time I take this thing in for a good overall. Afterall, she is 55+ years old and there is this 20 year time span where I have absolutely no clue where/who owned it and what was done to her mechanically or technically inside. ? I am looking to take it down to the United States where there are lots of techniciens. However, which ones are the reputable ones? Here in Canada, techies are far and few between and many are hobbyists. Not what I would be looking for to care for my gal. There is only one place, Keyboard Exchange Intl, who advertise selling organs and guarantees them “foam free” but they are way down in Florida. If anyone in this group has had defoaming work done on their Hammond in the USA, I appreciate your input good or bad. ? ? Cheers, JD ?
|
Re: Loose A100 volume pedal
All electronic organs that I've ever worked on use some sort of
friction device on the swell pedal. I don't know how many times a
customer has said to me, "The spring has gone in the swell pedal".
In most cases, all that was needed was some adjustment to
compensate for wear.
On 24/05/2022 19:26, Russell Proulx
wrote:
Thank you Chris. I cannot believe the fix was so easy and wonder
why the heck anyone would want an organ volume pedal the behave
like an automobile gas pedal. The organ is much more pleasant to
play now :-)
R
|
Re: Loose A100 volume pedal
Thank you Chris. I cannot believe the fix was so easy and wonder why the heck anyone would want an organ volume pedal the behave like an automobile gas pedal. The organ is much more pleasant to play now :-)
R
|
Re: Loose A100 volume pedal
The swell pedals on Hammonds do indeed use friction to keep the
last setting when you take your foot off. The screws at the end of
the axle simply lock the pedal to the axle, the axle itself turns
as the pedal moves, and it's the friction of the axle
supports/bearings that keeps the pedal in place.
On 24/05/2022 18:34, Russell Proulx
wrote:
The A100 I bought used has a volume (expression) pedal that flops
down to the max volume. The previous owner used a "hack" and
attached a string+spring to the back of the pedal to hold it up to
the min volume position. But this makes it behave like a gas pedal
and you have to keep your foot on in all the time and cannot be
left at a set volume.
The pedal is attached to a linkage that goes through the side of a
cardboard pedal baffle/housing and then up to a small box where it
attaches to the stem of a potentiometer.
The pedal pivots on a horizontal axle and there's a screw on each
end. Tightening the screws on ends solves the problem and the
pedal behaves as one would expect and stays wherever its
positioned to.
But is the pedal movement simply held in place by the friction of
those tighter screws at the ends of the pivot axle? It seems too
simple. I was expecting to find some missing counter weight, but
perhaps the solution was just tightening those screws where the
pedal attaches to the axle.
Can someone confirm that this is indeed all that's needed?
Thanks,
Russell
|
The A100 I bought used has a volume (expression) pedal that flops down to the max volume. The previous owner used a "hack" and attached a string+spring to the back of the pedal to hold it up to the min volume position. But this makes it behave like a gas pedal and you have to keep your foot on in all the time and cannot be left at a set volume.
The pedal is attached to a linkage that goes through the side of a cardboard pedal baffle/housing and then up to a small box where it attaches to the stem of a potentiometer.
The pedal pivots on a horizontal axle and there's a screw on each end. Tightening the screws on ends solves the problem and the pedal behaves as one would expect and stays wherever its positioned to.
But is the pedal movement simply held in place by the friction of those tighter screws at the ends of the pivot axle? It seems too simple. I was expecting to find some missing counter weight, but perhaps the solution was just tightening those screws where the pedal attaches to the axle.
Can someone confirm that this is indeed all that's needed?
Thanks,
Russell
|
Re: Scanner motorboating in depth
Although it doesn’t hurt to clean this part from zinc dentrites they are harmless in this area. The ?cylinders“ are ferrite housings for the coils (inductors) inside.? The zinc only grows on sheet metal that carries zinc coating. As you can see on the photo.?
Better leave this area untouched.?
— Christoph?
toggle quoted message
Show quoted text
Am 07.05.2022 um 21:34 schrieb johnrwillb3 via groups.io <johnrwillb3@...>:
?
By the way in reference to my problem I am attaching a photo of the back side of the line box. There were alot of dendritic crystals! I cleaned all of that out. Does anyone know how the inside of the cylinder looks? What do the yellow wires go to and what do the black wires go to? I know there are inductors in there, but I don't want to take it completely apart obviously. See attached photo.
Thanks, John in Brooklyn
Sent from my T-Mobile 4G LTE Device
|
Re: Scanner motorboating in depth
By the way in reference to my problem I am attaching a photo of the back side of the line box. There were alot of dendritic crystals! I cleaned all of that out. Does anyone know how the inside of the cylinder looks? What do the yellow wires go to and what do the black wires go to? I know there are inductors in there, but I don't want to take it completely apart obviously. See attached photo.
Thanks, John in Brooklyn
Sent from my T-Mobile 4G LTE Device
|
Re: Scanner motorboating in depth
Hi Scott,
I did that. It was very clean. The problem is not in the scanner its self. Think the problem is in the line box or switch. The I had the switch out and cleaned it. So its not that.
Thanks, John
Sent from my T-Mobile 4G LTE Device
|
Re: Scanner motorboating in depth
This is why we commonly rebuild the entire scanner without trying
to zero in on which poles are bad. Once you've gone in there you
want to clean ALL of it.
On 5/6/2022 5:36 PM, johnrwillb3 via
groups.io wrote:
toggle quoted message
Show quoted text
Hi everyone,
I've been through the archive with "motorboating" so much there!
My B3 is motorboating.? (My definition of motorboating is a
thumping generated by the vibrato scanner)
To test: turn on the organ without starting the tone generator if
the thumping is from the scanner you wont hear it now because it
is stopped
(Tone generator and scanner both driven by the same shaft).
I did this test ... no thump thump.
I then started the organ normally. Then when it was going I turned
the run switch off a couple of seconds and then turned the "run"
switch back on. Sure enough I could hear the thump thump slowing
down and coming to stop.?
As luck would have it the scanner stopped on one of the problem
poles! I could tell because of the humming static noise the organ
was making.
At that point I started rotating the scanner by hand.
I rotated the scanner off that pole and the noise stopped!
I rotated the scanner forward again one pole. No noise.
I rotated the scanner all the way around through all 16 positions.
I found three noisy poles of the 16. I think I may find some opens
in the line box for these poles.
Now I am wondering which three poles are they and how do I fix
them?
Has anybody else rotated the scanner with the amp on to find the
noisy poles?
I was thinking I could inject a sin wave on the scanner poles and
looking with a scope identify the noisy ones
Any ideas would be appreciated,
John in Brooklyn
|
Scanner motorboating in depth
Hi everyone,
I've been through the archive with "motorboating" so much there!
My B3 is motorboating.? (My definition of motorboating is a thumping generated by the vibrato scanner)
To test: turn on the organ without starting the tone generator if the thumping is from the scanner you wont hear it now because it is stopped
(Tone generator and scanner both driven by the same shaft).
I did this test ... no thump thump.
I then started the organ normally. Then when it was going I turned the run switch off a couple of seconds and then turned the "run" switch back on. Sure enough I could hear the thump thump slowing down and coming to stop.?
As luck would have it the scanner stopped on one of the problem poles! I could tell because of the humming static noise the organ was making.
At that point I started rotating the scanner by hand.
I rotated the scanner off that pole and the noise stopped!
I rotated the scanner forward again one pole. No noise.
I rotated the scanner all the way around through all 16 positions.
I found three noisy poles of the 16. I think I may find some opens in the line box for these poles.
Now I am wondering which three poles are they and how do I fix them?
Has anybody else rotated the scanner with the amp on to find the noisy poles?
I was thinking I could inject a sin wave on the scanner poles and looking with a scope identify the noisy ones
Any ideas would be appreciated,
John in Brooklyn
|
Re: K-100 service manual needed
FYI: This is a really, really awfully sounding organ. Comparable with Bontempi etc., I think. Will be parted out (I have two of 'em) and the amplifiers will be converted into a hifi pair. Thanks to Gerhard, anyway, for the complete SM.
Best regards!
|
Re: K-100 service manual needed
Yes, I have it. just a view minutes...
|
Re: K-100 service manual needed
This would be very kind of you, Gerhard. Thank you! Do you still have my e-mail adress?
Best regards!
|
Re: K-100 service manual needed
Hi Uwe,
Scan is ready. I will sen it to you. If anybody else needs this K-100 service manual please write me.
Best regards,
Gerhard
|
Re: K-100 service manual needed
Hi Uwe,
i have a original K-100 service manual in mint condition. With additional informations about exchange of the key channels in German language (original fax).
I can do a scan of all pages and schematics.
Best regards,
Gerhard
|
K-100 service manual needed
Hi,
I've the impression the K-100 lacks almost any important information nowadays. To date, I've only found the schematics of it's AO-68/AO-64 amplifier combination. Does anyone know a source for the complete service manual or a full schematics at least, of this admittedly not so much sought after organ? And does anyone have knowledge or an assumption why Hammond didn't put the amplifier section into a single chassis?
Best regards!
|
Re: [hammond_zone] my soon new rig
Interesting idea.? If done carefully and 'plugged' afterwards with something it sounds feasible.?
|
Re: [hammond_zone] my soon new rig
|
Christoph
Uwe Menrath