Resistor or jumper at hv rectifer socket: Zenith 25mc30

[Electronic M]

Originally Posted by Tubejunke

OK, I just figured out that I have been using Sams Set 722, Folder 4 which is for the 25LC30/U! Geez! It only specifies pins 1 &12 as heater connections. Mistake #1! Either way, like you I am assuming that the NC #4 is indeed a tie point as #5 certainly would not be right. I need to get a .pdf on my 25MC30 somewhere. However, it shows pins 1 and 9 according to what you are seeing and that would still have the resistor shunted to the cathode as the.pdf states, "pin 5 same as pin 1."

I hope I am correct in thinking like you that only one end of the resistor would be at the cathode, or pin 9 and the rest simply goes to second anode at CRT.

I probably have a paper copy of the factory schematic, and possibly have the whole Zenith manual too. If you want I could check if I have it, and scan it for you if I do.