Vintage Synth Repair

About this...is there a wire added to the tube socket in the Ao-28 that needs to come out?

Since I took out the OrganMate reverb, my sound got really weak.
you can bearly hear it when the volume is on normal and the pedal is full throttle. I dont know how to fix it.

Could you reply to:
andrewnitz07@...

thanks for the help
I dont know what to do



--- On Thu, 11/20/08, Michael Casino <michaelcasino@...> wrote:
From: Michael Casino <michaelcasino@...>
Subject: RE: [vintagesynthrepair] Hammond A-143 Weak sound A-100
To: vintagesynthrepair@yahoogroups.com
Date: Thursday, November 20, 2008, 8:14 PM










    
            









On an AO-28 Hammond preamp, the usual
insertion point is between and the wiper of the tone control and the 12BH7 tube
pin 7. 

   

I have the installation directions if you
want them. 

Mike 

   

<snip> 









get thee to the
"hammond_zone" group, fellow wheeler.

 

there are some very good techs there that may be able to work this out for you.

 

kenny



<snip>



 








 
  
  I have a hammond A-143 that I
  just took the reverb unit out of. it was wired to the far right 2 of the 4
  connectors on the right side of the preamp, and there was a tube adapter
  thing that it was also wired to. the tube right under the tone control knob.
  I took out the reverb unit (it was not stock, it's a reverb mate reverb) and
  I took out the stock reverb amp. there were only 4 wires connected to it when
  I got it. 2 of them went up to a box by the vibrato scanner and the other 2
  went to the speaker. I cut those off and now my organ sound is really weak. 

  

  Ive seen in some pictures of A-100 series organs that there are 2 wires
  coming down from the right side of the preamp down to the power amp. Mine
  doesnt have those wires there. I was wondering if maybe they were taken off
  when the replacement reverb was put in...

  

  

  How can I fix this??

  I tried to wire the reverb units back in, but it didnt change anything 
  
 














  





	
	




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