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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: UF1007 vs UG1007 posted by Lee of Omaha on October 18, 2016 at 13:22:27:
What do you mean by "demod diodes"? Are they in a tuner circuit? Are these perhaps the diodes in the stereo demux section?I agree with the other advice saying leave them alone. If they are functional, nothing good will come from substituting alternate parts in RF circuits.
Basic rule of vintage HiFi work: Rebuild the amp and preamp as much as you want. Stay out of the RF circuits unless you know how they work and have the test gear to perform a FULL FACTORY ALIGNMENT.
Even bending or moving of some parts in the front end can alter performance. If you see what looks like test points, a wire just sticking up on a board, this is probably what is called a gimmik. It's actually a capacitor and moving it will cause trouble. Yes one end is not connected to anything but then RF is weird. And it is actually connected via RF.
Edits: 10/19/16 10/19/16 10/19/16
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Follow Ups
- Schematic? - gusser 10:45:14 10/19/16 (1)
- The 10B uses a plethora of the "UG" diodes... - Steve O 11:26:45 10/19/16 (0)
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