[NJARC] Philco 39-45 Output Transformer

[Al Klase]

Joe,

Sounds like an open winding on the transformer primary.  Per the 
schematic, you should measure 300 ohms between pins 2 and 3 of each 42 tube.

Al

On 1/21/2018 6:59 PM, TrainBee via NJARC wrote:
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> _________________________________________________________
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>
> I'm having a problem with a Philco 39-45 Output Transformer.  With no 
> tubes in, using an audio generator or VOM, I can get a test signal 
> through one side (audible), but not the other. This is from the plate 
> of one of the 42's to grid.  It won't work on the the other side.  The 
> grid is the center tap.  I should hear a signal though both sides, 
> correct?  When I power it up I get no audio or hum at all.
>
>  Am I missing something, or is this transformer not working correctly? 
> The schematic is attached.
>
> Regards,
> Joe Devonshire
>
>
>
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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