Philco 38-690 Capacitor Replacement Question - Printable Version

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+--- Thread: Philco 38-690 Capacitor Replacement Question (/showthread.php?tid=13783)

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Philco 38-690 Capacitor Replacement Question - cwysong - 01-01-2016

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

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RE: Philco 38-690 Capacitor Replacement Question - Nathan Slingerland - 01-01-2016

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.

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RE: Philco 38-690 Capacitor Replacement Question - cwysong - 01-02-2016

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

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RE: Philco 38-690 Capacitor Replacement Question - cwysong - 01-27-2016

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

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RE: Philco 38-690 Capacitor Replacement Question - mikethedruid - 01-28-2016

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.

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RE: Philco 38-690 Capacitor Replacement Question - Kenneth F. Besso Jr. - 01-28-2016

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

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