12-30-2013, 04:32 PM
By way of brief introduction, I started vintage radio/TV restoration a couple of years ago. I have no background in electronics, but I've been able to pick up enough knowledge to keep me going through a few projects.
I picked up a very rusty, rodent-eaten Philco 645 this summer and I'm finally approaching completion of the electronic restoration. I got the full service info from Chuck Schwark, thank goodness.
My set is Run 3--stamped on the top of the chassis, and component changes consistent with Service Bulletin 234--except for two things, but I'm only going to ask about thing #1 at this time.
Bulletin 234: "Part No. 30-4114 (.06 mfd.) was added from the C- end of the B.C. resistor to the junction of resistor (66) and (67)."
That additional tubular cap was definitely not in the set when I opened it, but it has had service done. I want to put in that capacitor, but I don't know which of the three terminals on the BC resistor is the "C- end." (As I said--"no background in electronics")
Can someone tell me which is the C- end?
Thanks,
Winky
I picked up a very rusty, rodent-eaten Philco 645 this summer and I'm finally approaching completion of the electronic restoration. I got the full service info from Chuck Schwark, thank goodness.
My set is Run 3--stamped on the top of the chassis, and component changes consistent with Service Bulletin 234--except for two things, but I'm only going to ask about thing #1 at this time.
Bulletin 234: "Part No. 30-4114 (.06 mfd.) was added from the C- end of the B.C. resistor to the junction of resistor (66) and (67)."
That additional tubular cap was definitely not in the set when I opened it, but it has had service done. I want to put in that capacitor, but I don't know which of the three terminals on the BC resistor is the "C- end." (As I said--"no background in electronics")
Can someone tell me which is the C- end?
Thanks,
Winky
