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15th January 2010, 04:12 AM
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diyAudio Member
Join Date: Dec 2009
Location: Orange County, California.
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Zenith 7B31 Help
Any body rebuilt one of these as a stand alone amp? How did you bias the amplifier tubes (12AU7)? Most of the bias feed back circut is in the preamp that I don't have.
As a foot note these things must have been as piece of crap in thier day. On mine the insulation on the 355V feed has been burned through in two places by power resistors placed against them. The best I can tell it was this way from the factory. |
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