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 84b
#7

>would you happen to know where i can come by a 4x8mfd 450 v cap?
Well if the mounting bracket is still there you can fit a more modern twist lock can in to it. The original cap had a cardboard sleeve around it to isolate the cap from chassis gnd. The minus side is connected to the CT of the HV winding. You may have to slide it in thru to bottom side of the chassis as the bottom of the cap is larger than the hole in the chassis. Read up on rebuilding electrolytic caps to see how to make your own e cap for this set by gutting an old one.
Would replace the originals w/ a pair of 10mf @450v and #28 with 10mf @ 35-50v (- to the ct and + to the chassis)

>was that a 2meg replacement in place of 4meg I was reading about?
Could be. You can measure that resistor in circuit w/o taking the if transformer apart by connecting the ohm meter form the grid cap to the chassis. Have seem it way out of tolerance. By changing the value from 4 down to 2meg may make a slight difference but not a drastic improvement.

When you get a minute post a few pics of the top and bottom of the chassis. This will aid us in know whats there and what is missing.
I just need two more to finish up the second row!!!

GL


Attached Files Image(s)
   

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


Messages In This Thread
model 84b - by falcon123 - 03-28-2018, 02:32 AM
RE: model 84b - by Radioroslyn - 03-28-2018, 04:49 AM
RE: model 84b - by falcon123 - 03-28-2018, 06:05 AM
RE: model 84b - by morzh - 03-28-2018, 08:08 AM
RE: model 84b - by falcon123 - 03-28-2018, 08:46 AM
RE: model 84b - by OldRestorer - 03-28-2018, 09:52 AM
RE: model 84b - by Radioroslyn - 03-28-2018, 10:55 AM
RE: model 84b - by Ron Ramirez - 03-28-2018, 11:56 AM
RE: model 84b - by dacsman - 03-28-2018, 01:47 PM
RE: model 84b - by falcon123 - 03-29-2018, 12:58 AM
RE: model 84b - by Radioroslyn - 03-29-2018, 08:27 AM
RE: model 84b - by falcon123 - 03-30-2018, 01:37 AM
RE: model 84b - by Radioroslyn - 03-30-2018, 10:14 AM
RE: model 84b - by falcon123 - 04-01-2018, 04:53 AM
RE: model 84b - by falcon123 - 04-02-2018, 04:29 AM
RE: model 84b - by Radioroslyn - 04-02-2018, 10:15 AM
RE: model 84b - by falcon123 - 04-03-2018, 12:07 AM
RE: model 84b - by Radioroslyn - 04-03-2018, 11:19 AM



Users browsing this thread: 1 Guest(s)
[-]
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 1426 online users. [Complete List]
» 1 Member(s) | 1425 Guest(s)
Avatar

>