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Finally decided to jump back on this set after awhile, another CTC-9 that I went through inspired me to finish this one.
I'm trying to do a video alignment after having to change the transformer between the 1st and 2nd video IF. Unfortunately, I'm not getting any of the expected readings off the SAMS.
Here's how I'm doing the alignment. HOT and Vertical output tube are removed, chassis is on bench. B+ has been set to 385V through a variac. Convergence assembly is disconnected.
Bias Supplies
Bias supplies are off of an RCA WG-307B and are set with a meter as follows:
-6V at point A (SAMS) or F on PW400B (RCA)
-15V at point B (SAMS) or G on PW400B (RCA)
-7V at point C (SAMS) or A on PW600 (RCA)
-7V at grid of horizontal blanking amp
Point E (SAMS) or D on PW400A (RCA) to chassis
Both -7V are sharing the same supply.
Signal Generator
Signal generator being used is an HP 8662A. Negative to chassis, positive to a floating tube shield placed halfway over the mixer/oscillator on the tuner. Telescoping shield on the M/O was slid down, hence why only halfway. Floating shield verified as not grounded.
Tuner is set to channel 4, Generator is set to 43.8 MHz, strength varied but no effect.
DMM connected through 10K resistor to point D (SAMS) or E on PW400-A (RCA)
I'm getting like 0.2V regardless of whether the generator is connected or not. Varying the coil doesn't change anything. Hopefully someone sees something out of place. I'm also wondering if I should work my way from the tuner forward using a scope to adjust each coil.
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"If it isn't broke, you aren't trying hard enough"
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