Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Model 20 Wiring
#1

I have a Model 20 Deluxe I bought around 1988 at an Antique mall and began replacing most all of the caps and resistors and a fair amount of the wiring. I didn't know how to replace the filter caps in the can back then so I added a terminal block under the chassis and added the four caps there and disconnected the wiring from the can to the circuit to those mounted on the terminal block.

Lately after learning how easy it was to remove this can and add either electrolytics or standard caps, which I opted for the latter, I began chasing out the wiring from those caps to the transformer and filter choke and discovered the factory wiring had not agreed with the schematic. The schematic shows terminal point 11 on the transformer going only to one side of the filament on the rectifier tube. This radio is wired with point 10 going to one side of the filament. In other words, the technicians reversed points 10 and 11 on the transformer to wire to the filament. So, point 11 on the radio actually goes to one side of the filament of the 80 tube and then to the filter choke and the two filter caps. Does that really make a difference or should I rewire per the schematic?


Messages In This Thread
Model 20 Wiring - by Elijah - 12-21-2012, 03:39 PM
RE: Model 20 Wiring - by 7estatdef - 12-21-2012, 07:35 PM
RE: Model 20 Wiring - by Elijah - 12-21-2012, 07:49 PM
RE: Model 20 Wiring - by morzh - 12-21-2012, 09:04 PM
RE: Model 20 Wiring - by Elijah - 12-21-2012, 09:18 PM
RE: Model 20 Wiring - by TA Forbes - 12-22-2012, 12:56 AM
RE: Model 20 Wiring - by morzh - 12-22-2012, 02:42 PM
RE: Model 20 Wiring - by Elijah - 12-22-2012, 03:55 PM
RE: Model 20 Wiring - by codefox1 - 12-23-2012, 02:34 AM
RE: Model 20 Wiring - by Elijah - 12-23-2012, 02:50 PM
RE: Model 20 Wiring - by 7estatdef - 12-24-2012, 03:45 PM
RE: Model 20 Wiring - by Elijah - 12-24-2012, 07:30 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model 40-100
That was part pf what began my interest in tube battery radios, the variety of circuit designs, especially by Grimes-Pho...Arran — 02:37 PM
Studebaker/Philco AC-2687 car radio
Phill; I had a look at my Riders "Specialized" car radio books yesterday, I don't have one that covers Stud...Arran — 01:50 PM
Philco Model 249 made in England
Thanks for the information MrFixr55.   It's tube amplification and not solid state. TOMfklown — 11:27 AM
Philco Model 249 made in England
Well, I’ll be! I learned something.jrblasde — 11:03 AM
Philco Model 249 made in England
Yes, Garrard was well-regarded for its standalones.morzh — 10:48 AM
Philco 46-480 Electronic Restoration
Quite the interesting stories, sir! Somewhat reminds me of my first job out of school (not that I worked in a similar fi...jrblasde — 09:33 AM
Philco model 40-100
Arran, I restored 2 Canadian battery-crank telephones for a friend a while ago, a Northern Electric (Canadian version of...MrFixr55 — 08:04 AM
Road Trip for a Philco 46-480
Beautiful work, a 79 year old radio brought back to life. The first FM radios for me, a little iffy, had some I just cou...Jimradio — 08:01 AM
Philco 46-480 Electronic Restoration
I was a field engineer for a biomedical company for many years. Many was the time that I was driving home from NYC in t...MrFixr55 — 06:40 AM
Philco 46-480 Electronic Restoration
Don't laugh folks, I have not been above taking a chassis into the bathtub (when Ms. Fixr was out of the house), taping ...MrFixr55 — 06:02 AM

[-]
Who's Online
There are currently 899 online users. [Complete List]
» 1 Member(s) | 898 Guest(s)
Avatar

>