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  #1  
Old 11-06-2015, 08:32 PM
Electronic M's Avatar
Electronic M Electronic M is offline
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Got a Dumont RA-103 Dog(mouse)House and a GE monitor.

I went to Olorin67's place today to buy a GE video monitor from him. I find tube era video monitors interesting and like to buy them when the price is good....This one came from my Alma-mater as a bonus factor of interest.

On the way back I picked up a Dumont Dog House at a Habitat For Humanity store, that he had suggested might be of interest to me....Man was that habitat store hard to find! I went past it almost twice before noticing it. The set was easy to find, and when I asked the clerk about the price (since it had multiple tags on it, and had been there weeks) I was asked to make an offer. The set and the 60's stand it was on cost me the 30$ I offered.




Unfortunately Mom spotted roaches in the habitat store so both sets have to spend overnight (or longer if it don't frost) in the shed.....Mom's policy seems to be if a set comes from a good home it must stay overnight in the garage to quell her fear of getting roaches, if something is in a roach prone area or was likely exposed to roaches even indirectly it gets some shed time....

The tuning shaft on the Dumont is messed up so that will probably be an interesting issue. Both CRTs are untested. I'd assume schematics for the Dumont can be found on the ETF site, but I may have to fix the GE without service data.

Been busy installing hard wood flooring with the folks and have other sets including pay projects in the works that will keep me from really getting into these for a while yet.
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Last edited by Electronic M; 12-29-2015 at 03:08 AM.
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Old 11-06-2015, 09:19 PM
Olorin67 Olorin67 is offline
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Glad both sets went to a good home, I would have grabbed the Dumont, if funds allowed and I had some idea how to fix the tuning shaft.. That set had been there since early August.

Last edited by Olorin67; 11-06-2015 at 09:32 PM.
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Old 11-06-2015, 10:14 PM
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ChrisW6ATV ChrisW6ATV is offline
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Tom Albrecht repaired one of those tuning shafts on his Crosley 9-407 (with the same Dumont chassis) a while back; you should be able to find his discussion of it. He had an excellent description of the problem and his work.
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Old 11-07-2015, 07:03 PM
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Brought them in the garage and tested the CRTs. The one in the GE tests excellent.

The CRT in the Dumont had an unplugged brightener on it. It started off bad, but with brightener level heater voltage got almost as good as the CRT in the GE...Dropping back to 6.3V after that got me the bottom edge of the good range.


Better pictures:





Quote:
Originally Posted by ChrisW6ATV View Post
Tom Albrecht repaired one of those tuning shafts on his Crosley 9-407 (with the same Dumont chassis) a while back; you should be able to find his discussion of it. He had an excellent description of the problem and his work.
Good to know. VK's search function did not find it. Got a link?
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Old 11-07-2015, 07:11 PM
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More pictures:



Not having recently looked at pictures of the inductuner mech, the impression I get from the mech is that the dial/knob is connected to the tuner shaft via gearing, and the retainer for the knob shaft is damaged.....If I push it in and turn it feels like I'm engaging gummy gears. I can get some gear grinding feel/noise if the shaft is not pushed in correctly when turning.
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Old 11-07-2015, 07:12 PM
dieseljeep dieseljeep is offline
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What HFH store was it? The one on 104th and Burleigh?
The parking lot is awful small too! That store is very poorly organized, but at least you got something, that was worth the trip.
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Old 11-07-2015, 07:22 PM
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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.

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Old 11-07-2015, 07:22 PM
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Quote:
Originally Posted by dieseljeep View Post
What HFH store was it? The one on 104th and Burleigh?
The parking lot is awful small too! That store is very poorly organized, but at least you got something, that was worth the trip.
114th & Burleigh. The lot is small, but finding it after dark was hard enough to distract me from it.
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Old 11-07-2015, 07:25 PM
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baursam baursam is offline
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http://www.antiqueradios.com/forums/...t=crosley+9407

Tom's discussion on his 9-407 restoration
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  #10  
Old 11-07-2015, 07:30 PM
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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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Old 11-07-2015, 07:32 PM
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Quote:
Originally Posted by baursam View Post
http://www.antiqueradios.com/forums/...t=crosley+9407

Tom's discussion on his 9-407 restoration
Thanks.
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Old 11-07-2015, 07:35 PM
Olorin67 Olorin67 is offline
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I thought I read somewhere that the part of the shaft is ceramic.
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Old 11-07-2015, 08:07 PM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by Electronic M View Post
114th & Burleigh. The lot is small, but finding it after dark was hard enough to distract me from it.
I usually tried to stop there, when I'm in town but haven't found anything, so I didn't bother the last few times.
BTW, I hope to see you at the Landmark tommorow. I have the items loaded in my car, that you were interested in.
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Old 11-07-2015, 09:14 PM
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I plan to make it.
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  #15  
Old 11-07-2015, 09:32 PM
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Nice Du Mont, but where's the refrigerator?
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