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Philco 42-327 Code 122 High B+ Voltages
NV3G
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Posts: 74
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Joined: May 2008
City: Shinnston, West Virginia State, Province, Country: USA
#3

01-27-2010, 08:26 PM
I was injecting the signal into the grids of the 7B7's. I just discovered something that may be the problem. I can inject an audio signal into the control grid, pin 5 of the 50L6 and it sounds fine. Then inject an audio signal into the control grid, pin 3 of the 7C6 and it sounds fine. When I inject an audio signal into the top of the volume control, I get audio with undesired oscillations. I suspect the volume control. I will check that out on Friday. Thank you for the suggestions.

nv3g
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Philco 42-327 Code 122 High B+ Voltages - by NV3G - 01-27-2010, 11:48 AM
Re: Philco 42-327 Code 122 High B+ Voltages - by NV3G - 01-27-2010, 08:26 PM



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