Posts: 1,206
Threads: 11
Joined: Jul 2020
City: Greenlawn
State, Province, Country: NY
Mike, yeah, swap the transformer. The Push Pull Job is worth some money, definitely don't trash it!
+1 on Terry's (RadioRoslyn's) comments. Since the field coil is rated for 40 mA, it can drop 125V without burning out. That coil goes from B+ through at least 60K of resistance before getting to B- Do ensure that you replace C24 (Multi-section bypass cap). If it shorts, it can cause the field to overcurrent.
Good luck and keep us posted!
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Best Regards,
MrFixr55
Messages In This Thread
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 10:12 PM
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Recent Posts
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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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First Radio restoration
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| Hi Tubeman,
Welcome to the Philco Phorum. Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM |
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First Radio restoration
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| You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM |
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Zenith H725
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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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Graphics for majestic 1050 dial glass.
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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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Zenith H725
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| hello Ed,
how about that speacial tape used for ducting it's like foil or how about thin piece of
aluminum roof flash...radiorich — 12:19 AM |
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Zenith H725
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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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Zenith H725
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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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Zenith H725
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| The PSU filter cap arrived today (thank you USPS!) so I will work on that later.
Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM |
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Philco 610B oscillator wiring
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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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