Posts: 16,562
Threads: 573
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Today:
While extracting the capacitor can, decided to check the wirewound pot on the back panel, the one from AVC circuit.
It is open. Ordered a similar from eBay, cheap, $1.50 from China. If doesnt fit, it's a dollar-fifty.
So the whole bias network did not work.
Also fully open 100K resistor in the 1st AF, 77 tube plate circuit. Wouldn't work.
Wow, this radio is one handicapped old-timer.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Messages In This Thread
RE: Philco 16B restoration - by morzh - 10-09-2016, 07:09 PM
Users browsing this thread: 1 Guest(s)
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Recent Posts
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Rogers Majestic R-646
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| Vlad;
I was just reminded of something else, I'm not sure why but many Rogers built sets do seem to have open primari...Arran — 04:40 PM |
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Rogers Majestic R-646
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| Thanks RpdB
I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM |
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Rogers Majestic R-646
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| Vlad;
I looks like your set has the same problem that mine did, both a bad output transformer, and a bad audio inters...Arran — 03:21 PM |
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Rogers Majestic R-646
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| Ouch! Not often the secondary takes a hit. Wish there was a better solution. I have a good interstage transformer but it...RodB — 02:59 PM |
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Rogers Majestic R-646
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| By the way, the bypass you suggested is a rare solution in some circuits.
For example, this schematics solution is used...Vlad95 — 01:43 PM |
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Rogers Majestic R-646
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| No, you are wrong, because you did not know the details.
Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM |
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Rogers Majestic R-646
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| The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM |
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Rogers Majestic R-646
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| Thanks RodB for the help.
But this is not a real solution to this situation, not even a temporary one. Because the firs...Vlad95 — 11:34 AM |
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Philco Model 16 wiring question
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I was going to check the voltages as you suggested and hooked it up to my dim bulb. It appears I have a short. The bul...bobclausen — 10:34 AM |
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Rogers Majestic R-646
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| You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to th...RodB — 09:40 AM |
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