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RF transformer Repair

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Forum » In General » RF transformer Repair
           
Ross Hoff
Ross Hoff
 
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04.Oct.09 17:08

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  While trying to bring life back to a 179 Crosley I found the primary winding of the RF transformer, [ plate to B+ ] winding to be open. Because of the difficulty of finding a replacement, or trying to rewind the open winding, I bypassed the open winding with a 25K resistor at 1 watt , then connected a 500pf capacitor to the plate of the RF Amplifier tube and to the grid of the Oscillator Modulator tube. Easy fix and the radio now plays very well.

Konrad Birkner † 12.08.2014
Konrad Birkner † 12.08.2014
 
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12.Oct.09 09:33

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Please post from the relevant model page, not in talk. 

Well, it works, but it is a makeshift solution. If possible a correct replacement should take place (look for a basket case contemporary Crosley chassis).

Good luck !
KoBi

This article was edited 12.Oct.09 09:36 by Konrad Birkner † 12.08.2014 .

Joe Sousa
Joe Sousa
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13.Oct.09 03:01

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Your posts prompted a post from me sharing my experience with untuned RF transformer repair.

Thanks for the resistor tip, just the same.

-Joe

 

  
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