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-   -   Stromberg Carlson 1101 restoration (http://www.videokarma.org/showthread.php?t=252769)

bandersen 12-02-2011 01:43 AM

Stromberg Carlson 1101 restoration
 
I decided to take a little break from TVs and restore this little AA6 bakelite radio.
I thought it was a model 1200 at first, but when I opened it up I found 6 tubes which makes it an 1101 from 1946 just like this one.

The cabinet has a couple scratches and some odd discoloration near the controls but is otherwise sound.

The chassis looks to be all original except for the tubes.
http://farm8.staticflickr.com/7024/6...94a7b1e9_z.jpg http://farm8.staticflickr.com/7163/6...d1154024_z.jpg http://farm8.staticflickr.com/7152/6...ca886c5f_z.jpg http://farm8.staticflickr.com/7173/6...a93fa5cd_z.jpg

There is some discoloration and rust on the dial glass and painted backplate from where the pointer sat on AM 720 for probably decades.
http://farm8.staticflickr.com/7024/6...401a7e2f_z.jpg

The caps have nice Stromberg Carlson labels so i decided to restuff them. I used a heat gun to melt to old cap out and brown hot glue to seal in the new caps.
http://farm8.staticflickr.com/7156/6...399a0807_z.jpg

bandersen 12-02-2011 02:40 AM

After the recap, I powered it up and got some weak, garbled audio. Time to investigate...

Eventually, I noticed that one lead to the internal loop antenna had broken lose :rolleyes:

Much better gain now, but it's still garbled. I tested the one mica cap and found it to be shorted.
Replacing it did the trick - great sensitivity, selectivity and it sounds pretty good :music: :banana:
http://farm8.staticflickr.com/7008/6...e7ee8a70_z.jpg

Next, I went through the alignment procedure, and found it didn't really need it.

Finally, I'm going to clean it all up.
I used some glass cleaner and Q-Tips on the glass dial
http://farm8.staticflickr.com/7158/6...0feaf14f_z.jpg http://farm8.staticflickr.com/7019/6...0e68c3ef_z.jpg

The metal dial backplate was rusty and discolored form the pointer sitting in the same position for so long. I carefully unmounted it and removed the rust with naval jelly. Than a litte sanding and primer. Once that's dry, I'll used some metallic copper paint.
http://farm8.staticflickr.com/7001/6...9718e0bd_z.jpg http://farm8.staticflickr.com/7034/6...c31ec3d1_z.jpg http://farm8.staticflickr.com/7031/6...b30c612a_z.jpg

I also restuffed and repaired the filter cap.
http://farm8.staticflickr.com/7156/6...00a695cb_z.jpg http://farm8.staticflickr.com/7022/6...5d7026ba_z.jpg

omegaman 12-02-2011 02:55 PM

Excellent job photo documenting the procedure. Re-stuffing the paper caps is brilliant.

Winky Dink 12-05-2011 10:59 AM

The history of an old radio is often revealed when you first take out the chassis. It's obvious that this set belonged to, or was repaired by, a Boy Scout.

Reece 12-05-2011 11:07 AM

OK, WinkyDink, how about dropping the other shoe??? :scratch2:

Winky Dink 12-05-2011 11:19 AM

Dial Cord
 
Looking at the dial cord, he must have been practicing for his knot-tying merit badge.
- Winky

https://lh5.googleusercontent.com/-Q...2520knotty.jpg

bandersen 12-05-2011 02:12 PM

LOL - I hope that cord holds up. I really hate restringing radios.

Reece 12-05-2011 05:29 PM

Pretty Knasty Knots! Better draw a picture of how the string goes, Bob.

bandersen 12-06-2011 08:13 PM

Quote:

Originally Posted by Reece (Post 3020377)
Pretty Knasty Knots! Better draw a picture of how the string goes, Bob.

Luckily, I didn't need too. I just carefully laid the dial cord against the chassis while working on the dial.

I think it turned out well.
http://farm8.staticflickr.com/7164/6...27a97917_z.jpg http://farm8.staticflickr.com/7016/6...94263136_z.jpg

http://farm8.staticflickr.com/7149/6...ce423a9c_b.jpg

Reece 12-07-2011 06:32 AM

Now that's sharp! Ready for Larrrry Lu-jack! on Double-you ELLLL Esss! :music:

bandersen 12-07-2011 03:56 PM

Thanks! I wonder what Larry is up to these days ? I haven't heard him on the radio in years.


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