1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
Philco 38-4 question
emcjim
Junior Member
**
Posts: 9
Threads: 3
Joined: Apr 2018
City: Kenosha, WI
#1

12-30-2018, 11:46 AM
Hello,
    working on a 38-4 chassis and there is a resistor connected to C25 that is not listed on the component diagram ( I have attached that as well as a picture of the chassis). It looks pretty burnt and I want to replace it but want to be sure of the value. After looking at the schematic I am thinking that it is listed on the parts list as 27X, 1000 ohm 1/2 watt resistor, where on the 38-5 would be the shadow meter instead. Can anyone let me know what this is? Thanks.
Find
Radioroslyn
Phorum Expert
*****
Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#2

12-30-2018, 02:08 PM
Yes it looks to be the 1K resistor via the diagram. It supplies the plate voltage to the rf amp and mixer tubes. More than likely #10 or 25 was leaky and caused excessive current flow thru the resistor.

GL
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
Find
emcjim
Junior Member
**
Posts: 9
Threads: 3
Joined: Apr 2018
City: Kenosha, WI
#3

12-31-2018, 10:44 AM
Thank you for the info, much appreciated
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 38-7 Speaker
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM
Philco 42-390, code 121 speaker
>>A closer examination of the very small print schematic indicates that the speaker is a PM type. This shows a ...morzh — 05:18 PM
Philco 60 Squealing
Litz is typically tinned by simply rubbing it with the soldering iron tip while immersed in solder (and a bit of rosin f...morzh — 05:14 PM
Philco 6K7
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND. I am not ...morzh — 05:10 PM
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM
Philco 16B Parts
Hi Dan, Mike is correct, there's a lot of painted stuff on the chassis but it looks pretty good. The sm is all there,sp...Radioroslyn — 03:50 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A...captainclock1988 — 03:43 PM
Philco 42-390, code 121 speaker
Using a 5W  1.5k  ceramic resistor in place of the field coil and using a 4 ohm PM speaker, I was able to bring the radi...Stevelog — 02:57 PM
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM
Philco 6K7
I am restoring a Philco 37-60. The am reception is very good, but the shortwave is very weak. Run 6 Philco removes the g...bobbyd1200 — 01:35 PM

[-]
Who's Online
There are currently 4064 online users. [Complete List]
» 2 Member(s) | 4062 Guest(s)
AvatarAvatar

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