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 Post subject: Zenith 12S370
PostPosted: Jan Thu 11, 2018 1:48 am 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
I'll be into one of these in a couple of weeks and would like to have a legible parts list. Can anyone help out? It is so small in Riders that it might just as well be left out.

Thanks,

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Thu 11, 2018 3:18 pm 
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Joined: Oct Wed 27, 2010 1:35 am
Posts: 211
Location: Houston, TX
Did you get your copy of the schematic from Nostalgia Air? I think Radiomuseum has better scans available.
Jon

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Thu 11, 2018 6:32 pm 
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Joined: Aug Sat 08, 2015 9:50 pm
Posts: 601
Location: Fort Worth, TX 76108
I have a high res PDF version of the schematic and can email you 3 PDF's of the parts list zoomed to 600% if you'll PM me with your email address.

Larry


Last edited by LarryFS on Jan Fri 12, 2018 4:19 am, edited 1 time in total.

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Thu 11, 2018 6:59 pm 
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 24058
Location: Annapolis, MD
Or..
--Try the American radio history site
--Get one of the Rider's CDs from EBay

There is another Rider's repository somewhere on the web..Google might know.

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Sun 21, 2018 5:24 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Appreciate the help guys. I now have readable documentation which I badly needed as the chassis arrived yesterday and it is best described as brutalized. Now I'm looking for a pix of the top and bottom of the chassis as it left Zenith as it seems that this set deserves to live.

Thanks again,

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Tue 30, 2018 9:43 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Still looking for chassis photos. Also need a picture of the hardware that is missing. This hardware would connect the band changing shaft to the knob shaft. Even better does anyone have this hardware for sale? Thanks again.

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Jan Wed 31, 2018 8:15 pm 
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Joined: Jun Sun 16, 2013 10:12 pm
Posts: 657
Location: Brandon, SD
Hey Bruce, I just finished recapping a 12S370... Complete chassis and in great shape... I will get you some pics tonight...


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 Post subject: Re: Zenith 12S370
PostPosted: Jan Wed 31, 2018 10:22 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1630
Location: Silver Spring MD, USA
pixellany wrote:
Or..
--Get one of the Rider's CDs from EBay



+1

I picked up a CD with both Rider's and Beitmans and some extra info on it a couple years ago. Best money I ever spent, and it was cheap. The clarity is *so* much better than the online sources. Well worth getting.

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 Post subject: Re: Zenith 12S370
PostPosted: Feb Thu 01, 2018 4:27 am 
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Joined: Jun Sun 16, 2013 10:12 pm
Posts: 657
Location: Brandon, SD
Here's those pics... They are in no curtain order, hopefully they help...


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 Post subject: Re: Zenith 12S370
PostPosted: Feb Thu 01, 2018 4:30 am 
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Joined: Jun Sun 16, 2013 10:12 pm
Posts: 657
Location: Brandon, SD
And the rest...


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 Post subject: Re: Zenith 12S370
PostPosted: Feb Sat 24, 2018 2:51 am 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Thanks sdradioman. Your pictures make me feel a lot better about this set. I just learned that this era Zenith came from the factory looking like it was wired by some7th grade kid. Yours does look better than mine so I've got a long battle yet.

Does anyone know of a good source for Zenith parts such as the IF cans and the switches for the push buttons?

Bruce Hagen

PS. Re the schematic I got a good 8 1/2 X 11 print that is now on 11X17 100 weight hard finish paper for $0.45 courtesy of Fed Ex. So much easier to read.

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 Post subject: Re: Zenith 12S370
PostPosted: Mar Wed 07, 2018 1:38 am 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Still looking for the 1st and 3rd IF's. I'll take bad ones as long as the 2"x2"x3" look good.

Thanks,

Bruce

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 Post subject: Re: Zenith 12S370
PostPosted: Mar Fri 09, 2018 9:14 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Thanks to Paul I have the needed IF cans. And now another question. Where/what is the AC off/on switch. I do not have the cabinet and have a hanging toggle switch on a pair of wires. Somehow that does not quite fit the elegance of this set.

Thanks again,

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Mar Sat 10, 2018 2:16 am 
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Joined: Jun Sun 16, 2013 10:12 pm
Posts: 657
Location: Brandon, SD
The on/off switch is locate on the right side of the dial, closest set of buttons to the dial.. It is a toggle sort of switch with a pair of pins sticking out of it, one on top, the other on bottom... When one is pushed, the other is kicked out... The switch is mounted to the shutter dial assembly itself with 2 screws...


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 Post subject: Re: Zenith 12S370
PostPosted: Apr Thu 05, 2018 8:05 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Thanks SD. This is missing. Can anyone supply, can anyone post a photo of this part? I an add a switch to the volume control as it is on certain models but I'd like to do the original if possible.
And again thanks to all for your help in making this mess easier to save.

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Apr Fri 06, 2018 11:49 pm 
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Joined: Jun Sun 16, 2013 10:12 pm
Posts: 657
Location: Brandon, SD
Sorry Bruce88 but I can add a pic as I already finished the radio and gave it back to the customer... I would imagine someone out there has one...


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 Post subject: Re: Zenith 12S370
PostPosted: Apr Sat 21, 2018 9:57 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
Did anyone ever notice that there is no B+ connection for the output stages? Well at least on the Rider's schematic there is no tap on the output transformer.

Bruce Hagen

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 Post subject: Re: Zenith 12S370
PostPosted: Apr Sun 22, 2018 2:37 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7963
Location: Cleona, PA
Noticed on those underchassis pictures that some of the sockets visible are missing terminal 1, which Zenith did because they were mad at RCA and didn't want to use the metal tubes, which use pin 1 for the metal shield and thus shielding. Nevertheless some metal tubes are visible being used topside in the pictures, with their pin sticking down into oblivion below, not doing the shielding that metal tubes could provide.

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 Post subject: Re: Zenith 12S370
PostPosted: Apr Mon 23, 2018 10:07 pm 
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Joined: Dec Fri 08, 2017 5:40 pm
Posts: 163
Location: 44141
It was not only Zenith that did that. I got a nice little jolt back in the '40's on a couple of sets. Keeps one awake!.

Bruce

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