An Emerson with a 19AP4??

[dieseljeep]

Originally Posted by jr_tech

Where did it go to? is it C-63?

jr

Edit add: Is the 30K resistor *marked* as 30k or could it actually be the 470ohm resistor that has changed value?

I think it's a wire wound resistor. That's one crazy value change!
Neither schematic shows the wattage. Emerson seemed to use that type of high wattage resistors and on most, the leads corroded like that.
One the Sams, they show a -165 volt bias line.
BTW, what volume Riders is the Emerson sourced schematic in? Maybe, there's a production change bulletin, showing the circuit changes.