11-14-2011, 06:37 PM
To measure the ant coil, Unplug set connect ohm meter from the ant post and chassis ground. Turn the volume full up. Meter should read just a few ohms if not time to rewind.
The oscillator coil can be checked by connecting the ohm meter to chassis ground and then find pin 5 of the mixer tube. Pin 5 will have a resistor and a capacitor in parallel connected to it. The other end of the r/c will connect to the oscillator coil. At that point connect your ohm meter. Same as the ant coil, must have a low resistance like 3-5ohms.
Terry
ps Check 21, 22, and 24. Those are the critical ones they need to be within 10 percent of spec. Check 9 and 11. Those should be within a Kohms of spec.
The oscillator coil can be checked by connecting the ohm meter to chassis ground and then find pin 5 of the mixer tube. Pin 5 will have a resistor and a capacitor in parallel connected to it. The other end of the r/c will connect to the oscillator coil. At that point connect your ohm meter. Same as the ant coil, must have a low resistance like 3-5ohms.
Terry
ps Check 21, 22, and 24. Those are the critical ones they need to be within 10 percent of spec. Check 9 and 11. Those should be within a Kohms of spec.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
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