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
New Philco Repair Bench
Morzh is correct. The repair bench on our website is an archived image of chuck’s original site. He no longer provides s...klondike98 — 05:32 PM
Made mistake & did not label connection
Excellent information. It is all starting to come together now and your explanation really helped since I noticed that ...georgetownjohn — 04:39 PM
Made mistake & did not label connection
Hi John, I don't have this radio, but I can supply some info: Based on your pic, pins 7,8 and 1 are used together, go...MrFixr55 — 02:02 PM
New Philco Repair Bench
As far as I know, the Repairbench does not work, and has not been working in a while. Chuck (we had that campaign looki...morzh — 01:33 PM
Radio city products 664 schematic request
Need a schematic or manual for the 664. The 663 may be similar.daveone23 — 12:38 PM
New Philco Repair Bench
Thanks Gary.dconant — 12:16 PM
New Philco Repair Bench
I tried accessing the site through our library and got the same response. It's reported to our tech gurus. GaryGarySP — 11:50 AM
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM
Made mistake & did not label connection
I'm not sure why that wire wasn't covered in the video. I'm pretty sure the 6A8 won't work until that pin is grounded. Y...RodB — 09:47 PM

[-]
Who's Online
There are currently 5182 online users. [Complete List]
» 2 Member(s) | 5180 Guest(s)
AvatarAvatar

>