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Mighty 620 with a problem or 2 ?
Chuck Schwark
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#2

05-23-2006, 06:56 PM
Regarding the audio feedback; be sure the tubes shields are making good ground contact with the tube socket shield bases. Shields are on the 75, both 78s, 6A7, for a total of four in this model. Also be sure the grid cap lead of the 75 runs inside the shield.
Chuck Schwark,
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Messages In This Thread
Mighty 620 with a problem or 2 ? - by Guest - 05-23-2006, 05:44 PM
[No subject] - by Chuck Schwark - 05-23-2006, 06:56 PM
Rust attacks cars and Radios too! - by Guest - 05-24-2006, 03:58 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration