Posts: 228
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City: Marion
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I added a 500pf in series with the internal cap, no change then I noticed number on the side of the block holding 2XA and 2XB. It said 110 so I though maybe this is the value of the internal cap so I disconnected the internal and put in a 110. Now the trimmer peaks and the volume is what it should be. I'm going to change the 2XB cap. The 2XC cap has a 160 number which I assume will be 160pf. Finally getting somewhere.
Now to figure out why the AVC voltage is not changing. Is the 6R7 grid the proper place to measure that. if I measure the grid of the 6A8 tube the voltage varies when going off and on stations.
Messages In This Thread
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 07:35 PM
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Need to purchase some accessories for restoration of my Old Philco Radio
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Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM |
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Hi Tubeman,
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Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately.
More ...EdHolland — 10:18 AM |
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Murf;
I found this thread on the ARF, the first photo has a pretty good view of the dial glass.
Regards
ArranArran — 01:12 AM |
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hello Ed,
how about that speacial tape used for ducting it's like foil or how about thin piece of
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Ed;
One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM |
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I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM |
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Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM |
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