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Old 11-07-2015, 07:22 PM
Phil Nelson's Avatar
Phil Nelson Phil Nelson is offline
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Don't crank that inductuner mechanism too hard until you have a chance to pull the chassis and give it a careful cleaning & inspection. This article has some photos of the tuner:

http://antiqueradio.org/DuMontRA-103Television.htm

I've heard of those tuners having a broken ceramic shaft. My RA-113 even had a broken gear in the mechanism. Those things might have happened when lubricant dried up and turned hard, and then someone forced the tuner.

Phil Nelson
Phil's Old Radios
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Old 11-07-2015, 07:30 PM
Electronic M's Avatar
Electronic M Electronic M is offline
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Quote:
Originally Posted by Phil Nelson View Post
Don't crank that inductuner mechanism too hard until you have a chance to pull the chassis and give it a careful cleaning & inspection. This article has some photos of the tuner:

http://antiqueradio.org/DuMontRA-103Television.htm

I've heard of those tuners having a broken ceramic shaft. My RA-113 even had a broken gear in the mechanism. Those things might have happened when lubricant dried up and turned hard, and then someone forced the tuner.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html
I was gentle with it when turning it. If the user shaft was properly pushed in to place it felt as though it was turning other gears (silent mild resistance to rotation)....My hunch is that the tuner shaft is free albeit a pinch gummy, and all that is wrong is the user control shaft. In any event I don't intend to mess with it until I pull the chassis and can see what exactly is going on.
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