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B+ is measured at the point I marked on the schematic. B+ refers to the main DC supply in most sets - it's a carry over from the old battery days when they had A and B batteries - A Batteries were for filaments and low voltage bias, and B batteries (45V, 67.5V and 90V) were for the plate and other high voltage needs.
I marked up the schematic for you - hope it helps. Start with a 39 ohm 5W resistor and measure your B+, and follow my previous advice if it is high or low.
The Sams should carry you forth from here.
Cheers,
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
Last edited by Findm-Keepm; 09-29-2017 at 06:38 PM.
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