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

Philco 38-690 Oscillator coil help needed!
#1

I got a steal of a deal on a beautiful 690. I have restored a dozen radio's (I know, I'm a Rookie) but nothing prepared me for this monster. 

My problem is for some reason two of the oscillator coils got really hot and melted all the wax of the windings. One test good still the other is fried. It is coil 36 on the schematics part number 38-2627. 
     
   I have rewound other coil before with success, but it was well documented here and on YouTube. I however can't find any info on this one. I'm hoping someone here might have a clue how to rewind this one. If no one has any info I will try slowly unwinding and trying to figure out how it was wound.

    I've had this radio for almost a year and after reading Ron's blog a couple times and going through the posts on that model here I decided I would give it a go.

Thanks for any help you all could give.
I have been reading these phorums for years and have always found the help I needed without having to ask.
#2

Welcome to the Phorum, Dan! You've really gotten yourself a plateful with this set, and I envy you. I'm still looking for my '690', but the chase is often more fun in retrospect. Enjoy bringing it back. Before you try unwinding the coil try the needle method first. Slowly drag a needle across the windings and count the "bumps". Others have much more experience with winding than I. We are all happy to help out when we can. Just ask, and please document your journey. Take care and BE HEALTHY! Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
#3

There is no such thing as a "bad 38-690".

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#4

Actually it's a 32-2627 and is the same coil use in the 38-116. The '37 model's front end are a little different so coil doesn't carry the same pn but might usable. As for rewinding there are no specs for the procedure so your kinda on your own. I would carefully take it apart and note the wire ga and # of turns. Also direction of the turns are important.

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




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 91 Speaker Replacement
The spider is glued on the cone and so is the voice coil. I think you can use a cotton swab dipped in acetone and carefu...RodB — 02:42 PM
Restoring Philco 37-604C
Yes I saw that. If I knew, I'd probably try to arrange for getting it myself. But I have just got one. Which does not m...morzh — 01:44 PM
Philco 38-2 Automatic Tuning
When you push the lever, you are supposed to rotate the disk to the desired station. Then the magnetic tuning will acqu...morzh — 01:42 PM
Philco 38-2 Automatic Tuning
I figure out the muting from another picture that helped. Now I need to know how the automatic tuning works. When I push...dconant — 12:11 PM
Philco 91 Speaker Replacement
How would I go about removing the spider from the cone?dconant — 12:04 PM
Philco 38-2 Automatic Tuning
Hello, I am having trouble getting my automatic tuning to stay unmuted. If I play with the tuning handle I can get it to...dconant — 10:51 AM
Does anyone make photofinish replacements?
Here’s the link to the DIY photofinish section of our site: klondike98 — 09:46 AM
Delco car radio Peko vibrator converstion issues
Hi Richard, Thx for posting the schematic.  As I remember as a kid, these were great performers for the time, likely...MrFixr55 — 08:56 AM
Delco car radio Peko vibrator converstion issues
hello mr Fixr, The Electro  Powersupply that I am powering the radio with has a huge choke plus a 10,000ufd electrolyti...radiorich — 10:58 PM
Delco car radio Peko vibrator converstion issues
How about putting a choke in the power supply? The big cap was likely an attempt to stabilize the DC. Kids who cre...MrFixr55 — 09:19 PM

[-]
Who's Online
There are currently 2953 online users. [Complete List]
» 1 Member(s) | 2952 Guest(s)
Avatar

>