From: chuck@deja.net   
      
   On Sat, 2 Apr 2011 21:37:09 +0000, Christopher S   
    wrote:   
      
   >   
   >Hi folks,   
   >   
   >My Adcom preamp has developed an intermittent fault, and any guidance on   
   >how to fix it would be appreciated. Can't really afford a new   
   >preamp/tuner.   
   >   
   >Basically, a high pitch tone is produced through the speakers (old   
   >school Heybrook HB1's....nice). The high pitch tone does not vary with   
   >an change in volume. I can make the sound come and go by pressing and   
   >releasing any of the buttons on the pre amp. Tone in/out for example.   
   >Even jiggling the headphone jack plug will do it. The sound does come   
   >back by itself though and the only way to make it stop is fiddling with   
   >a button of the preamp. Any idea what is going on?   
   >   
   >Thanks audio gurus!   
   >Chris   
      
      
   Try tightening all the circuit board screws and remove any dark brown   
   glue on the boards.  Chuck   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)