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#11
02-05-2015, 11:58 AM
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Timmy,
Check your email at 1:20 pm. I scanned a Magnavox "series 45" schematic (CTC16 variant) which you have. The only thing is, there are no voltages on the tubes, only sources like 405 volt supply, etc. I am ALSO sending a series 41 (similar to CTC12) schematic which HAS VOLTAGES on all the tubes. On a 41, the blanker feeds into demod tubes' cathodes and the CRT bias sets the bias on the CRT via the B&G drive controls. Also the 41 schematic shows you CRT voltages: cathodes =322 volts G1s = 195 volts G2s = 700-735 volts The 12GN7 should measure about 250+ volts on plate pin 7 if too low, pix is bright, too high and pix is dark. Dont forget that 100 mf @ 25 v cap across the contrast control, jump in a new one Whatcha got for volts on CRT pins?
__________________
"When resistors increase in value, they're worthless" -Dave G 
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