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

Philco 37-690 C134, 134A descrepancy (Discriminator)
#1

Hi to all!
Been lurking for quite awhile reading all the great posts when I finally have a question for the expertsIcon_angel
While recapping C134, 134A I noticed the cap design doesn't match the schematic.
There are three wires from the metal canned cap mounted on top of chassis wired below.
Brown, red and White/ Black stripe wires and common ground to the metal can itself.
Attached is a diagram I made up to more easily see the problem.
   
   
Anyone found this additional cap in their rebuild?
camman
#2

I would tend to replace what is there, a .22 could sub for the two .1 paralleled, and a .1 for the othr one. Use 630 volt types so you do not have to keep so many differrent ones around. The three should easily fit in the old can. Changes, doeumented or otherwise, were often done in production.
#3

(03-19-2012, 02:50 PM)codefox1 Wrote:  I would tend to replace what is there, a .22 could sub for the two .1 paralleled, and a .1 for the othr one. Use 630 volt types so you do not have to keep so many differrent ones around. The three should easily fit in the old can. Changes, doeumented or otherwise, were often done in production.
Thanks codefox1,
This appears to be an early unit with a couple "update" resistors missing.
I think I will keep all existing wires as designed, too.
Yes, I always use 630V caps. Like you said....
no reason not to!
camman





Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1949 Motorola 5A9M
I've started looking into the very weak and garbled reception in the set (I have the HS-62A version of the chassis seen ...klondike98 — 12:00 AM
A Marconi model 86
Those last photos were not very good,so I  used one of my other cameras. This is more like the true colors of the radio....Dan Walker — 10:48 PM
Philco 42-345 Restoration/Repair
If you look closely at the paper wax capacitors they probably have something like "outside foil" near the blac...RodB — 10:41 PM
A Marconi model 86
Hello Dan, That really turned out very nice and I also like that color it is not to dark . I Have General Electric m...radiorich — 08:50 PM
Table radio 51C or 52C?
The model 51 and 52 are identical mechanically, I'm not sure what may have been changed between the two chassis but one ...Arran — 08:18 PM
A Marconi model 86
Well today I  installed the grill cloth board and the speaker.  The speaker must weigh 20 pounds by itself. I put the c...Dan Walker — 08:10 PM
Unidentified Philco Bakelite
It's a British Philco, likely from the early 1950s. It has a very common layout for British sets starting in the post wa...Arran — 08:02 PM
Table radio 51C or 52C?
I suggest you take that look under the hood eventually. Makes little sense to try to figure things out without looking ...morzh — 07:03 PM
Unidentified Philco Bakelite
Possibly a UK radio. I make this presumption based on the Long Wave band. A photo of the back available? Take care, -...GarySP — 06:18 PM
Table radio 51C or 52C?
Morzh There are only 7 wires coming off the transformer. 3 for B+, 2 for 115 in and 2 for 5V to the 80. Maybe there i...antiqueradionut — 05:36 PM

[-]
Who's Online
There are currently 283 online users. [Complete List]
» 1 Member(s) | 282 Guest(s)
Avatar

>