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

Linear Mode
Resistors used in Model 20
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#8

09-27-2023, 07:20 PM
One has to take the Philco part numbers of the original resistors used in model 20, and compare that with known data from vintage Philco paper, such as old parts catalogs.

Here are the resistors used in Model 20, excluding the large multi-section "B-C" resistor

(12) - 50K - Part No. 4237 - 1W
(15) - 250K - Part No. 3768 - 1W
(17), (20) - 500K - Part No. 3769 - 1W
(18) 100K - Part No. 3767 - 1W

So, all those small resistors under a model 20 chassis were originally 1 watt each.

I agree, most if not all of them are probably overkill, wattage-wise. But why take a chance? Just replace them with new 1 watt resistors. Your radio will be happy, and so will you. Icon_smile
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Resistors used in Model 20 - by MrFixr55 - 09-26-2023, 10:18 PM
RE: Resistors used in Model 20 - by morzh - 09-26-2023, 11:59 PM
RE: Resistors used in Model 20 - by radiorich - 09-27-2023, 08:06 AM
RE: Resistors used in Model 20 - by MrFixr55 - 09-27-2023, 10:10 AM
RE: Resistors used in Model 20 - by morzh - 09-27-2023, 10:36 AM
RE: Resistors used in Model 20 - by Arran - 09-27-2023, 06:11 PM
RE: Resistors used in Model 20 - by morzh - 09-27-2023, 06:54 PM
RE: Resistors used in Model 20 - by Ron Ramirez - 09-27-2023, 07:20 PM
RE: Resistors used in Model 20 - by radiorich - 09-28-2023, 08:36 AM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 09:02 AM
RE: Resistors used in Model 20 - by GarySP - 09-28-2023, 02:19 PM
RE: Resistors used in Model 20 - by Ron Ramirez - 09-28-2023, 02:42 PM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 03:18 PM
RE: Resistors used in Model 20 - by MrFixr55 - 09-28-2023, 05:37 PM
RE: Resistors used in Model 20 - by morzh - 09-28-2023, 08:25 PM
RE: Resistors used in Model 20 - by MrFixr55 - 10-01-2023, 08:59 AM
RE: Resistors used in Model 20 - by Arran - 10-01-2023, 04:37 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
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

[-]
Who's Online
There are currently 724 online users. [Complete List]
» 1 Member(s) | 723 Guest(s)
Avatar

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