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.