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help for the color-blind guy trying to test a PAS transformer

Posted by BillyBuck (A) on January 24, 2007 at 20:28:26

I unhooked all leads from the PCB. On the PA-211 transformer, I see a total of 7 leads:

--three tan-colored leads coming out of three nodes at one side of the unit
--two very dark, potentially black leads
--two lighter, possibily red or gray leads

Thinking the darkest (black?) must be the AC in, I connect 120VAC to them then measure AC voltage across the two lighter (heater?) leads. I'm only showing in the neighborhood of .4 VAC when I'm thinking I should be seeing more like 12 VAC

Same thing goes for the "tan" leads. Reading across any pair of them shows less than a volt, which I'm thinking oughta be in the much higher voltage (at least 500?) range.

This transformer came out of a working unit and is assumed good. What am I doing wrong here?

Thanks!

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