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 Post subject: Zenith Console Record Player/Radio
PostPosted: Aug Sun 22, 2021 11:38 pm 
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Joined: Aug Sun 22, 2021 9:48 pm
Posts: 2
Hello
I have a Zenith Console Record Player/Radio and having trouble getting the record player turn table to move. When i move the selector to "Phono" the turn table doesn't move, but when i move the knob to AM/FM the radio does play.

Here is the information of the unit.
Model# GA50-12
Chassis - 18YT20

I added some pics of the transformer and the molex connector to the turn table. I ohmed out the selector switch when moving to off and to the phono position. The switch seems to be fine.
I was thinking since the radio plays then the transformer is good?

I cant find a good schematic, but if the transformer is sending 120v through the molex connector to the turn table connector as seen in the pic. I'm not seeing this voltage.

The molex connector as seen in the pic seems to be cracked, but does plug in tight.
- what voltage should i be seeing coming out of the transformer to the turn table?

I was wondering if you guys can point me in the right direction on what to troubleshoot?


Attachments:
File comment: Model and Chassis information
Model.jpg
Model.jpg [ 553.65 KiB | Viewed 493 times ]
File comment: 120v Power that goes into the main transformer
Transformer2.jpg
Transformer2.jpg [ 877.44 KiB | Viewed 493 times ]
File comment: MOLEX power connector to turn table
Turn Table Power2.jpg
Turn Table Power2.jpg [ 847.97 KiB | Viewed 493 times ]
Zenith Info.jpg
Zenith Info.jpg [ 802.94 KiB | Viewed 493 times ]
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 Post subject: Re: Zenith Console Record Player/Radio
PostPosted: Aug Mon 23, 2021 1:40 am 
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User avatar

Joined: Jan Tue 31, 2012 1:55 am
Posts: 18214
Location: Mountains of Mourne. Ireland.
The service manual for the original changer is attached below.

A photocopy... :shock:
of the tuner service manual can be found on eBay.
image: https://i.ebayimg.com/images/g/-e0AAOSw ... -l1600.jpg
Attachment:
x.png
x.png [ 74.36 KiB | Viewed 482 times ]

Lubrication and more…
https://antiqueradios.com/forums/viewto ... 5#p3341915
https://antiqueradios.com/forums/viewto ... 7#p3185327


Greg.


Attachments:
service manual.pdf [6.34 MiB]
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 Post subject: Re: Zenith Console Record Player/Radio
PostPosted: Aug Mon 23, 2021 2:33 pm 
Member

Joined: May Thu 14, 2015 4:15 pm
Posts: 3482
Location: Dallas, TX
Very few consoles of this type used anything other than a 120V AC motor.
The transformer does not send power to the motor. Does the power switch on the control panel have a phono position?
The power to the motor most likely is routed through that switch.

_________________
Tim
It's not the Destination, It's the Journey.


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 Post subject: Re: Zenith Console Record Player/Radio
PostPosted: Aug Mon 23, 2021 3:32 pm 
Member

Joined: Jan Wed 16, 2013 12:04 am
Posts: 2541
Location: 77001
1. Have you checked the motor to see if
it has seized up or is turning ?
Remove the platter to view.

1.a. If the motor is working, the idler
wheel may need replacement.

2. Those plastic V-M motor switches are known
to break internally.

After you exhaust other troubleshooting, you
may find that is the problem.

3. Also, the changer will need a thorough
cleaning to function well.

Hotwax


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 Post subject: Re: Zenith Console Record Player/Radio
PostPosted: Aug Wed 25, 2021 11:59 pm 
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Joined: Aug Sun 22, 2021 9:48 pm
Posts: 2
@Notimetolooz, the control panel does have a phono position.
Since it has a photo position on the switch, what could i do to test to make sure the switch is good?

thanks,


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 Post subject: Re: Zenith Console Record Player/Radio
PostPosted: Aug Thu 26, 2021 2:54 pm 
Member

Joined: May Thu 14, 2015 4:15 pm
Posts: 3482
Location: Dallas, TX
I think that fact does point to a problem in the changer itself.
Hotwax had some good info. Does the motor turn easily?
Unfortunately the changer service info does not show the wiring (it is pretty simple) so it doesn't
identify how the switch is wired. If you know which pin went where you could test out the switch itself.
The wiring of the switch might be shown in the information for the chassis.

_________________
Tim
It's not the Destination, It's the Journey.


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