Philco Model 16 wiring question

Philco Model 16 wiring question - Printable Version

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Philco Model 16 wiring question - bobclausen - 06-06-2025

https://philcoradio.com/library/download/service%20info/wiring%20diagrams/vol1/split/Part7-Philco%20Wiring%20Diagrams%20Vol.%201.pdf

I recently acquired a Philco Model 16 Code 126. I removed the power transformer to place heat shrink on some very badly worn and cracked wires and I think I may have messed up the wiring to the 80 tube when I reinstalled the transformer. I couldn’t determine colours on the old wires and I tried to return them to where they originally were.

I have continuity, a beep on my DMM, between pin 1 and pin 2 and it measures .4 ohms. I also have continuity between pin 3 and the center tap as well as pin 4 and the center tap. Pin 3 to the CT is 68.5 ohms and from pin 4 to the CT is 62.5 ohms.

This is a complicated radio for someone of my abilities and I was hoping someone could let me know if I rewired this transformer incorrectly with the information I posted here.

RE: Philco Model 16 wiring question - morzh - 06-06-2025

If you have 5 wires, do this:

The wires that go to thick-wire wound winding are the filament.
If you do not know what wire goes to what winding, do this:

Get an ohmmeter and figure out the two winding: the filament (fraction of ohm, only two wires show continuity) and the Hi-V (three wires show continuity of tens of ohms).
The two halves are your 62 and 68 Ohms. There should be 130 or so Ohms between the Hi-V ends.
These two ends are your plates.
The centertap is that middle.
The filament is, well, the filament.

It does not matter which of the two ends go to which plate, and how the filament winding is connected.

This is it.

RE: Philco Model 16 wiring question - bobclausen - 06-07-2025

Thanks Morzh. So it appears I did wire it incorrectly and I have to switch the wires between pins 2 and 4.