1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Threaded Mode
Philco Model 70 speaker problems
Jhunt
Junior Member
**
Posts: 22
Threads: 9
Joined: May 2015
City: New York, NY
#1

09-02-2018, 04:25 PM
Started to work on a Model 70, was recapped by someone, both electrolytics and a few other caps. Radio plays, some static, and uh oh, whats that smell!!! Look at the picture to see where the sparks and smells happen.  The field coil measures 55k, should be 3.1K, output transformer primary is 450, which is fine. What is going on? Thanks


Attached Files Image(s)
   
Find
Radioroslyn
Phorum Expert
*****
Posts: 7,305
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
#2

09-02-2018, 06:52 PM
Would suspect that the copper wire in the field coil failing do to rot. Options are find a replacement spkr or take your spkr apart and rewind the field coil.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
Find
Jhunt
Junior Member
**
Posts: 22
Threads: 9
Joined: May 2015
City: New York, NY
#3

09-06-2018, 03:10 PM
I just purchased a speaker that works fine. All is well!!!
Find
« Next Oldest | Next Newest »
Thread Closed




Users browsing this thread:
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1371 online users. [Complete List]
» 1 Member(s) | 1370 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration