Hi All,
You didn't mention what, if any, experience you have in working on older tube amps. If you would let us know your skill level (or comfort level--how involved do you want to get), I'm sure we'll be able to get you running, or at least help you figure out what's wrong.
I doubt seriously that it's the volume pot, but never say never . . .
Bad pot?
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by Shannon Parks » Fri Sep 01, 2006 5:56 am
What model is it and do you have a schematic? Oscilloscope perchance?
I do believe there was a 'bad pot' problem around then, mostly being sold to Berkeley kids. Yellow_Light_Colorz_PDT_16
I do believe there was a 'bad pot' problem around then, mostly being sold to Berkeley kids. Yellow_Light_Colorz_PDT_16
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by mesherm » Fri Sep 01, 2006 4:33 pm
many SC schematics here
http://www.audiophool.cjb.net/MadeInRoch.html
does the RP-721 use push pull 7408s with 7199 amp/phase splitter?
http://www.audiophool.cjb.net/MadeInRoch.html
does the RP-721 use push pull 7408s with 7199 amp/phase splitter?
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mesherm - KT88
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by Shannon Parks » Fri Sep 01, 2006 5:46 pm
lifeinspace wrote:I havent ordered the schematic yet, but the model is
RP-721 WO.
Mesherm has maybe sniffed it out for you (the page references the 120 if you have the 721):
http://www.audiophool.cjb.net/Schem_A/S ... _schem.gif
- designer of fine tube audio gear at (((parks audio)))
- founder and admin of the diytube forums
-
Shannon Parks - Site Admin
- Posts: 3764
- Joined: Tue Mar 18, 2003 5:40 pm
- Location: Poulsbo, Washington
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