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610 volume fluctuation
TA Forbes
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Posts: 2,353
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City: Clayton, NC
#2

03-16-2012, 12:17 AM
Is the grid cap on the tube loose? I am talking about the silver cap that should be premanently affixed to the top of the tube, not the wire connector end. If yes, that could be the issue.
Try replacing the 75 with a strong tube and go from there. The 75 is the first audio/2d detector tube, and the volume control feeds the grid of the 75 through a .01mFd cap.

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Messages In This Thread
610 volume fluctuation - by Chris Cusick - 03-15-2012, 11:20 PM
RE: 610 volume fluctuation - by TA Forbes - 03-16-2012, 12:17 AM
RE: 610 volume fluctuation - by Arran - 03-16-2012, 03:02 AM
RE: 610 volume fluctuation - by Chris Cusick - 03-16-2012, 10:09 AM



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