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 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
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM
Philco model 38 code 121 not receiving signal.
I use a pair of Mastercraft brand DMMs from Canadian Tire, from what I read most of those DMMs use the same main chip re...Arran — 02:36 PM
Philco model 38 code 121 not receiving signal.
Thank you sir. Yes I feel good and also relieved because this one's been weighing on me a bit.Stormlord5500 — 11:18 AM
Philco model 38 code 121 not receiving signal.
It feels good don't it? Good luck on the rest.Paul Philco322 — 11:06 AM
Philco model 38 code 121 not receiving signal.
I've reinstalled the coil. Now IT'S ALIVE!!!!!! I fired up my TinySA on signal generator mode and set it to 1400Kc and ...Stormlord5500 — 11:01 AM
Philco model 38 code 121 not receiving signal.
Yes, Walmart, right up there with Fluke.RodB — 11:00 AM
PT 6 chassis screws size???
it certainly won't be metric! SAE threads were all that was known then. Take care, - GaryGarySP — 10:58 AM
Philco model 38 code 121 not receiving signal.
I think this thing is way more accurate than my Walmart DMM. :DStormlord5500 — 08:19 AM
Philco model 38 code 121 not receiving signal.
Thankyou for the kind words sir. I double checked it with my component tester and it read 2.7 ohms at .02mH.Stormlord5500 — 08:14 AM
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM

[-]
Who's Online
There are currently 1045 online users. [Complete List]
» 4 Member(s) | 1041 Guest(s)
AvatarAvatarAvatarAvatar

>