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Old December 28th 05, 02:14 AM posted to rec.radio.amateur.homebrew,sci.electronics.design
Joerg
 
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Default 6v & 90v DC Power supply

Hello Michael,

They have a Hammond B3 at my church, with the Leslie speaker. There
is another model Hammond in storage that needs a lot of work. Someone
had it on their screened in porch and the finish is ruined, but it still
plays.


Just make sure that the oiling intervals are religiously kept. If the
other one still plays be grateful for that. If it's the same model or
nearly the same keep it. Even if the finish is beyond repair some day
you might be really thankful to be able to scavenge its tone generator
once the TG on the other Hammond goes.

A bad finish is often easy to fix compared to taking the whole machinery
apart. Ours has a superb finish condition but it had been run dry for
more than a decade before it was given to us. So the TG is quite worn :-(

Actually it was so bad that when I was done it gulped almost two cans of
Hammond oil.

Some words of caution: The rectifier tube of the amp in the bottom is
located pretty close to the back and it gets freaking hot. I would take
care that the organ is never placed against a curtain or other flammable
material and that nobody stores any stuff behind it. The power cord on
ours almost crumbled in my hands and when attemting to swap it I
discovered that this instrument did not have a single fuse. So I made a
nice box with fuse and IEC connector.

Regards, Joerg

http://www.analogconsultants.com
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