[HAM] 122 fast rotor problem:

[Dave Bishop]

>I looked in and found the wire going from the fast motor to the receptacle 
>was just dangling and not hooked up to anything, so I put a plug on it and 
>plugged it in but still nothing happened.

Did you try plugging in the fast motor with its new plug into an extension 
cord attached to the house mains?  If it still doesn't turn, the problem is 
not the amp, but rather the fast motor (or your new plug) itself.  If the 
fast motor is doesn't turn, you can find out how to service it at 
www.bentonelectronics.com under Service.   If it turns out that the windings 
are shot, there are lots of techs on the list who can sell you a replacement 
motor.

The other diagnostic would be to plug a table lamp into the "lower" tremolo 
receptical on the amp and see whether it lights when you switch to fast.  If 
it does, the amp likely isn't at fault.

If the motor works with the amp bypassed, try hooking the motor into the 
"upper" tremolo receptical with the switch set to fast.  If it still works, 
clean the lower tremolo receptical with DeOxit, or bend the fast motor plug 
pins to make better contact.  That's all thats left in the amp that can 
cause your symptoms.

Its possible that somebody desoldered the wire under the amp that connects 
the horn and rotor fast recepticals together, but quite unlikely.  The 
recepticals occasionally break internally, which would be unfortunate since 
they are a bear to replace.

Regards,

Dave Bishop

----- Original Message ----- 
From: "Luther Nallie" <lnallie at yahoo.com>
To: <hammond at zeni.net>
Sent: Tuesday, September 26, 2006 9:43 PM
Subject: [HAM] 122 fast rotor problem:


My lower rotor doesn't seem to want to work in the "fast" position.  It does 
fine in the "slow" or chorale.  I looked in and found the wire going from 
the fast motor to the receptacle was just dangling and not hooked up to 
anything, so I put a plug on it and plugged it in but still nothing 
happened.  I took the amplifier out and didn't see anything disconnected but 
I did clean the relay and swapped the 12AU7 tubes. Is there a way to check 
voltage coming out of the fast (lower) receptacle and if so, how much?  I 
would appreciate any advice.  You guys got me through the other Leslie and I 
thank you for that.  This is a 122, by the way.

  Thanks, Luther


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