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:
[-]
Recent Posts
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM

[-]
Who's Online
There are currently 2396 online users. [Complete List]
» 1 Member(s) | 2395 Guest(s)
Avatar

>