wg4900 chassis

security0001

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i have read through the manual a and b both but i can't find the proper B+ voltage for the 4900 chassis or where to measure it at.. any help please.
thanks
 
i have read through the manual a and b both but i can't find the proper B+ voltage for the 4900 chassis or where to measure it at.. any help please.
thanks

R503 at back-left of the chassis, I test it with the positive lead on the terminal with the blue wire. On the couple of k4900 chassis I have, it is the large ceramic resistor mounted on the frame. Or TP91 post at back-center of the chassis can be used.

Should measure about +130vdc. I don't think there is a B+ adjustment pot the K4900 chassis.
 
thank you i am familar with those two points.
 
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