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 dog bone resistor values
#1

I want to replace the 5 dogbone resistors. I can not find the equivelent part number/codes for these parts. I would appreciate any help you can give.
#2

Why do you need the part numbers? You can't just go down to the Philco distributor and get these anymore...

Anyway, your wish is my command:

(12) 50,000 ohms, part no. 4237
(15) 250,000 ohms, part no. 3768
(17) 500,000 ohms, part no. 3769
(18 ) 100,000 ohms, part no. 3767
(20) 500,000 ohms, part no. 3769

--
Ron Ramirez
Ferdinand IN
#3

Here's some additional info where they are listed by wattage.

http://www.philcorepairbench.com/carbonres.htm

And if yours aren't shown in the list click on the comparison pictures link. That is handy for all old dogbones, not just Philco.

You will probably have to resort to modern values like 470k instead of 500k, etc.

GL,
Bill
#4

thanks for your help. Ron, which site has these part numbers? I understand you don't sell them.
#5

You aren't going to be able to find those parts any longer more than likely. I'd recommend you get modern equivilents...

Try http://www.justradios.com : http://www.justradios.com/rescart.html

Look for ones that are as close as possible in the 1W Flame Proof column. They come in packs of 5.

50k ohm would = 47k ohm
250k = 250k
500k = 500k
100k = 100k

Brian Mattson
Coon Rapids, MN




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently 2256 online users. [Complete List]
» 2 Member(s) | 2254 Guest(s)
AvatarAvatar

>