Re: Noisy A100

["Steve Blair" <Steve_Blair@macmail.lbl.gov>]

>I have an early 1960's A100 hooked up to a Leslie 760. After the organ >has
been running for approximately 2 hours, I get a noise that can only be
>likened to sub bass feedback when the vibrato is switched on even with >no 
keys pressed which is present on both the Leslie and the internal >speakers.
Removing the rear panel (just the frame/fabric cover and not >the generator
cover) seems to stop it (I know it sounds stupid). 
---------------
John -
I'm getting a similar noise from my A100.  Since the organ is against a wall
where my main electrical panel is located outside, I assumed it might have
something to do with that.  But I haven't taken the time to move the organ
and find out.
 
The fact that you removed the rear cover means that you must have had to move
the organ away from a wall.  Could this true?  Is there an electrical source
nearby?  Just an idea.  

Also, I once left a patch cord hooked up to the phono input jack on the organ
preamp and that was humming because it wasn't plugged into anything.  Da!

I'm no tech.  (I call Bob S. down the road).  Good Luck.
--------------------------------------
Steve in Berkeley




John H.