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Restoring a Philco 71 Code 121-No sound
#3

I started looking at the oscillator coil (P/N 13) and according to the ohms readings found what I suspect is an open coil.
Readings are as follows:
Between pins 2 and 5 : 9.3 ohms
Between pins 1 and 3 : 6.6 ohms
Between pins 4 and 5 : 5.2 ohms
Between pins 2 and 4 : 4.5 ohms
Between pins 3 and 5 : 0 ohms (open ?)
Note: pins are numbered clockwise 1 to 5 from the top (12 o'clock) position mounting bracket
The chart for the reference ohms resistances list the following:
Primary (inner) : 5.2 ohms
Primary (outer) : 5.2 ohms
Secondary (outer) : 15.7 ohms

I'm thinking the open circuit is the secondary if I'm reading the schematic correctly.
Question: Which coil should I attempt to rewind and can someone tell me how to find the beginning and the end connections of such coil ?


Messages In This Thread
RE: Restoring a Philco 71 Code 121-No sound - by dmblackburn - 07-03-2024, 09:50 AM



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