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 Post subject: FADA 940
PostPosted: Dec Fri 21, 2018 11:58 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
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Location: 06475
Picked this console up for $20.00 and could not resist so It's mine now. The cabinet looks good and only needs minor touch up. Everything is there except for the cover for the bleeder resistor compartment.

Just finished re capping this set. Replaced all electrolytics and paper / molded caps but have left all mica and ceramics alone. I have a picture but there are three images in the horizontal plane.

There is a Standard tuner as found in Emerson and other sets in there. It has TV 201 printed on it with a date Dec. 13 1949 which is the same year the set was made. My Sams photofact shows the set as having the RCA tuner, as does the tube chart inside the set. This tuner has only two tubes a 6J6 and a 6AG5.

Seems unlikely to me that this set left the factory with this tuner and am wondering if it could be the source of my problem.


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 12:50 am 
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Location: Beaver Falls, PA. USA
It sounds like your horizontal oscillator is running at the wrong frequency. Follow the instructions in the service literature, and it should come right in. Before doing any adjustments, make sure all the components in the oscillator and AFC circuits are OK, including the tubes.

The Standard tuner could be a replacement.

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Last edited by Tim Tress on Dec Sat 22, 2018 1:06 am, edited 1 time in total.

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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 1:00 am 
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Post a pic! :)


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 6:57 am 
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Location: WI 54812
OK, I'm envious. 8)
Image


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 11:15 am 
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Joined: Oct Thu 23, 2014 5:15 pm
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Location: 06475
Tim Tress wrote:
It sounds like your horizontal oscillator is running at the wrong frequency. Follow the instructions in the service literature, and it should come right in. Before doing any adjustments, make sure all the components in the oscillator and AFC circuits are OK, including the tubes.

The Standard tuner could be a replacement.


Thanks Tim!


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 11:42 am 
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Joined: Oct Thu 23, 2014 5:15 pm
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Location: 06475
Thanks Kevin! Mine looks just like that. Swore I would never get a console as they are too big and heavy, take up too much space and hard to sell. When I saw it I had to have it! Especially for the price! One caveat: The CRT is a dud. I don't have a tester but tested it using irob2345"s method for cathode emissions using a 6V battery and a voltmeter. There is a thread here somewhere you may have seen. It takes about 5 minutes on the tester to get up to 100 millivolts and continues to climb very slowly but I get no signs of life when installed in the set other than the heater glowing. I do have a 12LP4 from an RCA T121 that works though. That set is pretty ugly with it's brown metal cabinet and bought it for parts. It's loaded with 3 grey glass 6SN7's which, thanks to the audionut crowd sell for $85.00 each for NOS tubes if you can find them! I re capped the set to see if it would work and it does quite well so I would prefer to look for another 12LP4

I've taken lots of pictures and should be able to post some very soon. I should have time for this over the hollidays.

Cheers!


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 5:25 pm 
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The Standard tuner was a common upgrade for older sets using the RCA tuner, as it was much more sensitive.

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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 11:27 pm 
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That's one of the nicest console TV models of the '40's IMO. It has an almost pre-war look to it.


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 Post subject: Re: FADA 940
PostPosted: Dec Sat 22, 2018 11:47 pm 
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Nice Find! That was one of the step up models. Sold a few of them back in the '50's.

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 Post subject: Re: FADA 940
PostPosted: Dec Sun 23, 2018 1:25 am 
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Tim Tress wrote:
The Standard tuner was a common upgrade for older sets using the RCA tuner, as it was much more sensitive.



Definitely. You could buy kits to install the Standard tuner in a variety of brands that were originally sold with lesser quality ones. The Standard tuner made a huge improvement in fringe area reception and wasn't subject to the failures of many of the other set specific tuners such as the RCA. The original RCA tuner was the weakest link in their otherwise excellent design.

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 Post subject: Re: FADA 940
PostPosted: Sep Wed 16, 2020 9:22 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
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Location: 06475
The set has been sitting for over a year. When put away last I had raster and multiple image. Now I no longer have any high voltage. I went through everything in the service manual and all tubes capacitors and resistors check good. The only thing I can find is that the audio output transformer has a short in the secondary section. I measure resistance of about 2.5 meg. so I guess you could call that a short! Could this have anything to do with my current problem?

Thanks in advance! I have lots of photos that I have to resize. Here is one of the empty cabinet:


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 Post subject: Re: FADA 940
PostPosted: Sep Wed 16, 2020 9:31 pm 
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Your horizontal oscillator is probably not running or has drifted so far off frequency it no longer drives the flyback in the resonant frequency range in which it can generate HV.

Get a scope and check that the H osc is running and check it's frequency against the horizontal sync pulse frequency of composite video.

The audio issue should be unrelated to the horizontal/HV issue as long as one is not dragging down a B+ line (which seems unlikely).


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 Post subject: Re: FADA 940
PostPosted: Sep Wed 16, 2020 9:39 pm 
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Electronic Memory wrote:
Your horizontal oscillator is probably not running or has drifted so far off frequency it no longer drives the flyback in the resonant frequency range in which it can generate HV.
Get a scope and check that the H osc is running and check it's frequency against the horizontal sync pulse frequency of composite video.


Just a suggestion, make sure you use a schematic which will tell you "DO NOT MEARSURE" around the flyback and horz output tube. These voltages can kill instruments.

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 Post subject: Re: FADA 940
PostPosted: Sep Wed 16, 2020 11:22 pm 
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Joined: May Tue 06, 2014 1:52 am
Posts: 51
Location: Middletown, pennsylvania, 17057
Hi, Just picked up the same tv your working on about a month ago. Haven't done anything to it. Got it for free. Don't know what I'm going to do with it. It is a nice set. Good luck getting yours to work.


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 Post subject: Re: FADA 940
PostPosted: Sep Thu 17, 2020 12:33 am 
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Location: Durham, NC
stuben wrote:
The set has been sitting for over a year. When put away last I had raster and multiple image. Now I no longer have any high voltage. I went through everything in the service manual and all tubes capacitors and resistors check good. The only thing I can find is that the audio output transformer has a short in the secondary section. I measure resistance of about 2.5 meg. so I guess you could call that a short!

Nope -- we'd call that an open! :wink: Luckily, replacement audio output transformers are easy to come by.

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Mark Nelson
A collector of TV signal boosters and UHF converters -- God help me!
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 Post subject: Re: FADA 940
PostPosted: Sep Sun 20, 2020 9:40 pm 
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Joined: Oct Thu 23, 2014 5:15 pm
Posts: 237
Location: 06475
Thanks for all the feedback!

I really don't have the tools to diagnose this thing to get it to work. We are planning on moving and I can't take it with me. It's free to anyone who can come pick it up in Old Saybrook Ct.

It has all the knobs, high voltage cage working 12LP4, somewhat weak but watchable in indirect light. I have lots of pictures if anyone is interested.

Hope to hear from someone!


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