Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 38-690 Capacitor Replacement Question
#1

Happy New Year!!!

In the center section there is a .05 cap (part 7) and a 51K ohm resistor (part 9) that I have no idea how to get to. These are between the coils and the center plate cover. Has anyone replaced these parts and if so, how did you do it?  
Any help you can give me is appreciated!
Thanks
Chris


Attached Files Image(s)
       
#2

Hi Chris - this is a common struggle with most of the 37-XXX and 38-XXX models with an RF subchassis. A few threads to take a look at:

http://philcoradio.com/phorum/showthread.php?tid=15
http://philcoradio.com/phorum/showthread.php?tid=3242

Basically, you can try to thread the needle with narrow tools (http://www.philcorepairbench.com/tips/svctip02.htm) - or you can bite the bullet and take the RF chassis off (carefully desolder and label each wire that goes to the main chassis). Then if you (carefully again) disassemble the band switch you can get at the parts.
#3

Thanks Nathan. That is what I was afraid the response would be. I'll pull the sub-chassis out and replace the cap and resistor.

Chris
#4

I just finished aligning the 38-690! 


To replace the one capacitor that was buried I was able to loosen the screws holding the RF chassis in place and lifted it from the back. Disconnecting the side panel I was able to get in and replace the capacitor there. I then ran a wire to the bottom of the chassis and connected the capacitor and labeled it so if anyone services it in the future this will stand out.


Thanks for all of your help on this. It's a fantastic radio, and I'm very happy to have it.


Chris
#5

Congratulations ! Beautiful job ! It is always such a feeling of accomplishment when you finally have one of these great old radios playing like new again, and, with the fact that one can use higher rated parts that can be disguised to look old, they should be even more robust than the originals. Have fun listening to it. The shortwave bands are a lot of fun.
#6

    ON you-tube  Philco 37-2670,,,part 19 of 34,,,,is a really good way to do this,,cheers




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Samlex heavy-Duty bench supply filter question
Hello Everyone, I have one of my Heavy-duty bench powersuplies made by Samlex it's 13.8 volt dc 20-25 amp supply. What I...radiorich — 11:24 PM
Looking for place to donate unique Philco Philco J-1930 Prototype
It's a Glaser Sears changer which Philco's engineers thought was an upgrade over a VM, but in retrospect I'd prefer the ...jeibner — 10:39 PM
AC/DC Transformer-less Sets
Joseph, Thank you for the confirmation. I knew that there must be more to the Transformer-less AC/DC radios than the ...PeterN — 10:30 PM
AC/DC Transformer-less Sets
Good evening, folks. Power station engineer here! The east coast had pockets of DC-only power well into the twentieth...jrblasde — 10:11 PM
AC/DC Transformer-less Sets
Model 40 does not have a rectifier, so it would be a DC only model. This however does not say anything about using...morzh — 08:01 PM
AC/DC Transformer-less Sets
I was wondering if anyone knows if these AC/DC transformer-less sets were actually used on 110v DC anywhere, and when. ...PeterN — 06:35 PM
Looking for place to donate unique Philco Philco J-1930 Prototype
Given the 1960s vintage, it is likely that the cartridge is ceramic, likely more stable. The changer looks like a Voice...MrFixr55 — 05:03 PM
Jackson 665 j2 schematic request
FIXED!daveone23 — 03:55 PM
Bakelite crack repair - what is best epoxy?
Thanks everyone. I appreciate you sharing your experience and looks like I'll work with the 24 hr two part clear epoxy....de371 — 10:25 PM
Jackson 665 j2 schematic request
Without a schematic its going to be hard tracing the wire wound spool resistors.daveone23 — 05:21 PM

[-]
Who's Online
There are currently 4180 online users. [Complete List]
» 1 Member(s) | 4179 Guest(s)
Avatar

>