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Zenith Got it Wrong - Part Deux

12/6/2021

6 Comments

 
For internet searchers:

What the hell is wrong with my -
5-S-119
5-S-126
5-S-127
5-S-151
OR any early 5516 chassis.

​Use this post and the Part 1 below to correct later 5516 chassis parts discrepancy.
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Zenith 5-S-151
It seems that Zenith never posted a corrected schematic or parts list. All of these issues come from the early use of a 2125 ohm field coil speaker. Most of these chassis came with a 1000 ohm speaker.
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Zenith 5-S-119
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Zenith 5-S-126
IMPORTANT NOTE: When servicing one of these chassis it is not mix and match. If your speaker has a 2125 ohm FC use the original schematic . If your chassis has a 1000 ohm speaker use the corrected schematic and parts list.
In all honesty, the original configuration does not work as well as the latter. I suspect that the speaker spec was an error and , rather than eating the cost the wrong part, Zenith used them anyway. From what I have seen radios having the early speaker (2125 ohm) are far less common. I have observed both the 6.5" and the 10" speakers with 2125 ohm FC, but I have not seen an 8" ((49-152) speaker with the 2125 ohm FC.
Original graphics courtesy Nostalgia Air/Ryders
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And Now for Something Completely Different

I have been studying these radios for a while along with their battery powered brethren. So I ended up with quite a few "extra" parts. 

I have (had) a 5648 chassis out of a 6-S-330 complete with speaker, all restored. I didn't have a cabinet and never really liked the photo finish offered on the 1938 model. So I put the slightly better 6 toob chassis in a 5-S-127 cabinet and the result is 6-SX-127, the radio they never built but should have.
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The cabinet for this one came from PayBay. There is a seller offering a lot of parted-out cabinets and chassis parts. This one looked ok from the sale pictures, but when it got here, well, it was a mess. It had been refinished poorly and sanded hard and dropped at least once. So I decided to reveneer the top and front with book-matched walnut burl, which is a lot more figured than the Zenith stock veneers.

Fuzzy, the ATV riding shop-cat and friend for almost 20 years had just passed so I had no inspiration to move on. The cabinet just kept getting smoother and shinier until it was hard to photograph, especially outside like I normally do.

I miss that old cat.

​Russ
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6 Comments
Gene Jensen link
4/4/2023 06:36:01 pm

I appreciate your efforts on this 5516 chassis as there nothing really out there and all inquiries lead to: GO to Nostalgia Air... which is a Zero help. I've re-stuffed the caps and now I can see where things are supposed to go, and it is working. Someone fixed it in 1973 and it was a mess....I did change those R5 and R I0 as they were the values you mentioned but replaced them as I thought the had drifted from the riders schematics...Riders are very often missing dots so you guess sometimes what the value should be as the images are not very sharp or CLEAR what its supposed to be. I'm lucky to have found your post and thanks for your efforts.....

Reply
Russell Webb
4/8/2023 09:22:39 am

Glad I could help.

Reply
Matthew Porter
4/30/2023 05:44:19 pm

So i own a zenith of this era that does infact have the 49-152 with a 2150 ohm fc just thought of it when i saw this post.

Reply
https://advanceappliance.ca/cooktop-repair/ link
6/7/2023 10:20:36 pm

My grandfather loves collecting this kind of stuff. He always takes care of these things.

Reply
Zenithguy
12/12/2023 06:22:15 pm

The parts list as you may know by now is correct. the 490M is not megohms, M=kilohms. 1000.
Hard to see the decimal on the part list from Nostalgiaair. You are correct they are .1 even though the list says 1,the decimal is lost in the scanning and copying. The belt needs the idler moved upwards in the photo,to hold oressure on the top (in the pic) part of the belt.
Beautiful kitty!

Reply
Russ
12/13/2023 08:29:47 am

I think that you would have a hard time finding a 490 megohm resistor anyway.

The idler is in the stock location but I have often seen the spring anchored to the wrong point.

Fuzzy was my best buddy. We lost him about 2 years ago. He was almost 20 years old. On his last day he road the ATV over to the shop but did not feel like working on anything, preferring to lay down in the cool shade.

Russ

Reply



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CUSTOM DESIGN BY SUE WEBB  06/2013       Redesigned by Russ Webb     Approved by Fuzzy   Updated:  Pretty much all the time, but I forget to change this date
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