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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 52,442 of 52,877   
   bhamham@gmail.com to All   
   Re: Restoring a Sherwood S-5000   
   31 Oct 15 16:40:28   
   
   Hi everyone,   
      
   My first post here. I've only briefly skimmed this thread but it sure looks to   
   be a great resource for restoring the Sherwood S-5000. I've got one on the   
   bench - the older version with the separate tube shields on the 12AX7s. I'm   
   not getting any sound at    
   all.   
      
   I've checked all the voltages on the schematic and found that V3 for both   
   grids is way off. Should be -1V on one side and -1.5V on the other. I've got   
   around 18v for each. I've checked all the resistors attached to V3 and they're   
   OK. I haven't checked    
   any caps, thought I'd seek advice before I start lifting leads.   
      
   My supply voltages all appear to be OK. There's 415v on the 7189 plates (using   
   those Soviet EL84s), Bias is -16 but it still has the selenium rectifier and   
   old caps. Someone changed out the 3-way power can but that's all that's been   
   done. I've checked    
   all the tubes and swapped out V3 with a known good one.   
      
   I'm still learning to troubleshoot tube gear and hoping to learn a good deal   
   with this Sherwood. Any help would be really appreciated.   
      
   Regards,   
   Bruce   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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