restoring a 100-f

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swank

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Jun 12, 2011
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Hi all. New here, obviously...recently found a 100f at a storage unit sale. Pretty rough condition. Neither deck worked, but radio did. Sound is rad though for sure. Both speakers kick out the jams quite well. Here is a vid after some basic cleaning:

https://www.youtube.com/watch?v=KPyWeOVE32k

The power switch problem is now taken care of, the bottom deck had some sticky linkages that were preventing the box from powering down. I went through the insides pretty extensively, cleaning and whatnot.

There was a small issue with the top deck play head. When I opened the box, there was a screw stuck in the grease around the tray spring mechanism. I set that aside and went about my business of cleaning. Put everything back together and still the decks didn't work. So back apart everything came. Went a little deeper this time and actually removed both decks, cleaning as I went. Found out that the little screw came from the azimuth (?) on the top deck. put it back in and readjusted. Works great now!

Bottom take took a lot of fiddling to get working. As far as I can tell, it is working properly. This is where my tech question comes in though, because I can't test it completely just yet. It seems there should be some kind of spring in the door itself that pushes the cassette up against the playing mechanism. Mine doesn't have that. Could someone post a pic of what the inside of their door looks like for me? I imagine it would be exceedingly difficult to find something like that, so I'm guessing I'll have to make it myself or somehow improvise it. If nothing else, just so I can see the beauty work!

Anyway, I will post pics when I get to my other computer.

Thanks!
Dave
 

swank

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Jun 12, 2011
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thanks! got it all working, even though i wasn't able to source the springs. i just cut some pieces of foam to hold the tape in place to make sure everything works. can be seen in the video below. the only real problem is the shoddy RCA jack for the left AUX input (have to wiggle and hold to get sound out of it). even so, it was a pretty cool moment when i hooked up my 1200 and listened to an old krs-one record. it was like a time machine.

https://www.youtube.com/watch?v=uG5Ai-2IyUw
 

oldskool69

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May 5, 2009
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swank said:
thanks! got it all working, even though i wasn't able to source the springs. i just cut some pieces of foam to hold the tape in place to make sure everything works. can be seen in the video below. the only real problem is the shoddy RCA jack for the left AUX input (have to wiggle and hold to get sound out of it). even so, it was a pretty cool moment when i hooked up my 1200 and listened to an old krs-one record. it was like a time machine.

https://www.youtube.com/watch?v=uG5Ai-2IyUw

Sounds like you have a cold solder joint that has seperated. Look at the portion of the board where the RCA jacks are mounted and look for a crack around the pins. This is your likely culprit. Also, you can clean the contacts by taking De-Oxit and the stick of a Q-Tip with most of the cotton removed. Simply moisten the Q-Tip and rotate within the pin receptor of the RCA jack to remove dirt and oxidation. Then clean the outer portion. :-)
 

Jboogie2384

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Sep 30, 2010
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Isn't this radio being sold or auctioned on eBay right now? It's in my watch list. I'd keep this one if I was you if you purchased it. She looks great. What's the scoop?
 

blu_fuz

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Jun 3, 2009
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Jboogie2384 said:
Isn't this radio being sold or auctioned on eBay right now? It's in my watch list. I'd keep this one if I was you if you purchased it. She looks great. What's the scoop?
Don't tell everyone, sheesh! :angelic:
 
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