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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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