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5S119 Ch=5516

5S119 Ch=5516; Zenith Radio Corp.; (ID = 20947) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321471) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321472) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321473) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321476) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321477) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 321478) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 699722) Radio 5S119 Ch=5516; Zenith Radio Corp.; (ID = 342612) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 342611) Radio 5S119 Ch=5516; Zenith Radio Corp.; (ID = 342613) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 342614) Radio 5S119 Ch=5516; Zenith Radio Corp.; (ID = 699725) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 699726) Radio 5S119 Ch=5516; Zenith Radio Corp.; (ID = 765114) Radio
5S119 Ch=5516; Zenith Radio Corp.; (ID = 765116) Radio 5S119 Ch=5516; Zenith Radio Corp.; (ID = 765115) Radio
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5S119 Ch=5516; Zenith Radio Corp.; (ID = 699722) Radio
Zenith Radio Corp.;: 5S119 Ch=5516 [Radio] ID = 699722 799x639
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For model 5S119 Ch=5516, Zenith Radio Corp.; Chicago, IL:
Thanks to ebayer larry21751
Country:  United States of America (USA)
Manufacturer / Brand:  Zenith Radio Corp.; Chicago, IL
alternative name
Chicago Radio Lab
Year: 1937 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 6A8G 6K7G 6Q7G 6F6G 5Y3 or 5W4
Main principle Superheterodyne (common); ZF/IF 456 kHz
Wave bands Broadcast, Short Wave(s) and Police.
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm
Power out
from Model: 5S119 Ch=5516 - Zenith Radio Corp.; Chicago,
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 20 x 11.5 x 9.1 inch / 508 x 292 x 231 mm
There is also a version to operate from 25 to 60 Hz and selectable from 95 to 220 V.
Price in first year of sale 45.00 $
External source of data E. Erb 3-907007-36-0
Circuit diagram reference Rider's Perpetual, Volume 7 = 1936 and before
Literature/Schematics (1) -- Original-techn. papers.
Literature/Schematics (2) Table Top Radios Vol. 1 Stein 98 (page 168.)

All listed radios etc. from Zenith Radio Corp.; Chicago, IL
Here you find 4275 models, 3894 with images and 3389 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Zenith Radio Corp.;: 5S119 Ch=5516
Threads: 3 | Posts: 12
Hits: 941     Replies: 6
zenith: High plate voltage 6Q7
Christopher Pallotta

Hello! Would appreciate help with the 5S119 I’m restoring.

Here’s where I am:

* All electrolytic and paper capacitors replaced

* All resistors beyond 15% replaced

* All tubes test OK, except 6Q7, awaiting replacement

So, although the 6Q7 is measuring weak in all sections (no shorts), I decided to fire the chassis up with it in place as the replacement hasn’t arrived. I brought it up slowly with the variac/isolation/dim-bulb, and the dial lamps lit and there were no problems with shorts. The only sound produced, though, is a buzz which is there regardless of volume setting. All controls seem to have no effect on sound. 

I consulted the “socket voltage” guidelines in the schematic and found the following upon testing the relevant points:

1. 5Y3: 240V AC in, 240V DC out. Appears to be ok.

2. 6F6: Pins 3/4/7 measure correctly, pin 5 is supposed to be -5V, I’m getting -25V

3. 6Q7: Pin 3 is supposed to be 75V, I’m getting 240V. Pins 4/5 should be .1V, I’m getting 2.3V. Pin 7 measures OK. Pin 8 is supposed to be 1.5V, I’m getting 2.4V

4. 6K7: Pin 3 OK at 240V. Pin 4 is supposed to be 85V, I’m getting 112V.  Pin 5 measures 0V. Pins 7/8 OK.

5. 6A8 Pin 3 OK at 240V. Pin 4 is supposed to be 85V, I’m getting 115V. Pin 5 supposed to be -1, I’m getting 114V. Pin 6 supposed to be 166, I’m getting 196. Pins 7/8 measure OK.

Measurements were done with the Variac dialed to produce 112V at AC in.

The 6Q7 measures as a bad tube, but even without it in the circuit, I’m still getting 240V at pin 3 where there is only supposed to be 75V.

All voltage tests were also done with the speaker/field coil plugged into circuit. The schematic states that field coil resistance is supposed to be 2125 ohms, but mine measures 852 ohms. The speaker itself states that it is a model 49-165-X rated for 1000 ohms. The schematic states that speaker 49-143-6 is supposed to be the correct speaker. So, perhaps the wrong speaker is included with my radio. Because of the concern of improper field coil resistance, I wired a 2.2K resistor in place of the field coil. With the 2.2K resistor in place, I still had an excess of 230 volts on pin 3 of the 6Q7. 

Further, without the field coil/speaker plugged into the chassis, I measure 30V on pin 3 of 6Q7.

Does anyone have any thoughts/suggestions? Although the 6Q7 is measuring weak, I don’t think that’s causing all these voltage anomalies. I’ve rechecked all the values of the resistors and everything appears to be in order there. Could a bad resistor or wrong value resistor be causing the issue? If so, which would be the most likely suspect? Or, is the field coil resistance discrepancy to blame? And why just hum with no volume control? Because the 6Q7 is weak?

Thanks for your help in advance!


Christopher Pallotta

A follow-up on my post:

I discovered that I had replaced the two 490K ohm resistors with 490 ohm resistors. This has been fixed and the correct values installed. Voltage at pin 3/plate of 6Q7 is now about 150v vs. the 240 I was getting before. Still far above the 75 volts called for in the schematic, but better.

After replacing the resistors I no longer have any sound coming from the speaker. I still haven’t received the replacement 6Q7 which reads bad and is installed now.

Tom Seeger

Very poor emission in the triode section of the 6Q7 will cause the plate voltage to read higher than normal. The new tube should lower this back to the normal range. However I would still have expected some output from the radio on local stations, so there may still be another problem. While waiting for the new tube, I would recheck the other resistors that you replaced and solder connections etc. With the volume control at mid point, you should get a hum if you touch the wiper. If you do, then there is still a problem up stream in the RF sections, or both diodes of the 6Q7 are dead. If they tested OK look further up stream. If you don't get a hum when touching the wiper, the problem is in an audio stage. Its important to see some negative bias voltage (-10 to -20V) on the control grid of the output tube.

Christopher Pallotta

Thanks, Tom. Really appreciate your help!

I’ve replaced all the tubes at this point and the radio has awakened somewhat. I was able to do an alignment and the test tone is pure with no hum, but it is very weak coming from the speaker. Through the antenna, I am only able to tune into an AM transmitter I have running in the house. Sound is ok, but again, very low volume.

I’m encouraged at least, that I’m getting sound, but need to figure out whether the front end is dead or there’s a problem with the output stage, perhaps the output transformer. If I hook another speaker to the voice coil leads I get the same low volume, so I don’t think the issue is the speaker or field coil. 

I purchased an old signal tracer from ebay that I’m hoping will help me diagnose the issue, but that hasn’t arrived yet.  

Referencing the “socket voltages” chart on the schematic, I’m still getting some anomolies and I can’t seem to figure out why. I’ve double and triple checked all the resistors and capacitors. These are my measured voltages (in parentheses) compared the chart (all filaments measure 6.4V):

6A8: Pin 3: 240 (290), Pin 4: 85 (67), Pin 5: -1 (5) Pin 6: 166 (226), Pin 8: 4 (5.1)
6K7: Pin 3: 240 (292), Pin 4: 85 (64), Pin 5: 3 (0), Pin 8: 3 (0)
6Q7: Pin 3: 75 (152), Pin 4: .1 (2.3), Pin 5: .1 (2.3), Pin 8: 1.5 (2.7)
6F6: Pin 3: 230 (273), Pin 4: 240 (293), Pin 5: -5 (-18)
5Y3: Pin 3: 240 (293), Pin 8: 240 (293) 

Any additional help greatly appreciated!

Tom Seeger

With the volume control at maximum, touch the wiper. On a normally functioning radio, you should get a loud buzz.

Christopher Pallotta

Thanks again for your assistance, Tom.

Yes, I get a buzz when touching the volume wiper at highest volume setting, but the volume level of the buzz is not high. 

The volume variable resistor is supposed to be 400K ohms and I measure:

Center wiper to high: 37 ohms - 356K 

Center wiper to low: 356K - 266 ohms

Tom Seeger

Your measured voltages will be somewhat higher if you are using a modern DVM. The schematic indicates that the voltages are measured with a 1000 ohms per Volt meter, which was common at that time, and tended to load the circuits, thus reading a bit lower.

I suspect that you have a problem in the front end with sensitivity. Even if the volume was low due to an audio issue, you should still probably hear some local stations. (I assume you have some local stations?). Does the AVC change with tuning at all? It should sit around  0 Volts between stations, and go toward -10 Volts on a strong station. Do you have at least 10-20 feet of antenna wire connected?

Hits: 562     Replies: 2
zenith: Phono input indicated in schematic, not present in radio.
Christopher Pallotta

Hello, I'm currently working on restoring a 5S119 and have come across a notation in the schematic that indicates a phono jack input and phono switch. Additionally, there's an alternate drawing of the second detector tube labeled, "Circuit changes for phonograph."

My radio does not have a phono jack/switch and after looking at other photos of this model online, I haven't come across one that does. The circuit changes are very simple though, so it certainly helps if I wanted to add this input. Was it intended that others would do the same themselves using this schematic as a guide or was this actually a factory-supplied option from Zenith?

Any insight appreciated. 

Wolfgang Bauer

Hello Christopher,

the schematic is for 7 different models.
Look for the model Zenith 5S127A Ch= 5516, there you will find the phono input.

Best regards WB

Christopher Pallotta

Thank you, Wolfgang. I did see the other models noted on the schematic, but it didn't dawn on me that only some of those models would actually have the phono input. Thanks for pointing that out and I'll now look up the 5S127A as I'm curious to see how they implemented the feature in that model.

Take care and thanks for the clarification.

Hits: 1769     Replies: 1
zenith: (Ch=5516); 5S119
John Allen

the first tube in the line up of tubes listed is supposed to be a 6A8G and not a 6AB6.

Wolfgang Bauer

Thank you, you can proceed to any changes yourself.
Click on the model page on "Uploads and questions", than "Model change etc."
Than "Suggest a chance".
Then fill out the form to change what you want.
Than "GO", Ready.

Best Regards WB.

Zenith Radio Corp.;: 5S119 Ch=5516
End of forum contributions about this model