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Philco 19H open oscillator transformer
#7

(01-11-2015, 07:04 PM)jeffb Wrote:  Hello, has anyone run into this: part of the primary side of the oscillator transformer being open on the Philco model 19H, code 128? (Riders' volume page # 4-19). On the primary side, there is the usual primary winding, and also a small extra primary winding. On my radio, this extra small winding is open.

Jeff - welcome to the wonderful world of Philco 89 and 19 sets.

Open tickler windings in oscillator coils is a very common problem with these sets.

Here is an older Phorum thread on this subject which should be helpful:
http://philcoradio.com/phorum/showthread.php?tid=8753

Do not forget to bake your coil as described in the link above. Seriously. These 89 and 19 sets need all the help they can get. The coils are known to absorb moisture over the decades, which can cause an otherwise good (or rewound) coil to prevent the circuit from oscillating as it should. Don't bake it any hotter than 200 degrees F.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Philco 19H- code 128 electrolytic cap - by jeffb - 01-10-2015, 09:49 PM
Philco 19H open oscillator transformer - by jeffb - 01-11-2015, 07:04 PM
RE: Philco 19H open oscillator transformer - by Ron Ramirez - 01-11-2015, 07:44 PM



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