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 Post subject: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Mon 10, 2018 12:51 am 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
I have a youtube video illustrating my question, but the forum will not allow me to post offsite URLs. You can go to my video by going to youtube and search the following : "Zenith Turntable locked troubleshoot inquiry"

I just bought a Zenith stereophonic turntable console from an estate sale. It work and sounded great--aside from a slight scraping noise that the turntable was making. When I clicked the switch over to "REJ" (reject), the turntable locked and although I hear a motor running the turntable is locked in place and won't turn. Any assistance would be great. I'm curious as to whether I'm not operating correctly, or whether something is broken.

Thanks!


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Mon 10, 2018 4:54 am 
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Joined: Aug Tue 24, 2010 8:56 pm
Posts: 4772
Location: Northeast Florida
Something is either broken or gummed up. I would not suspect the idler wheel---they don't just stop working all of a sudden. If the platter is seized, it could be gummed up platter bearings, or the auto mechanism might be jammed from lack of lubrication.

It can fixed---the question is, are you willing to do it yourself? If so, the first thing you want to do is remove the clip that retains the platter. Once the clip is out, the platter can be removed and the drive mechanism inspected. This includes the platter bearings.

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William


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Tue 11, 2018 4:23 am 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
Thanks so far. I am willing to try and fix it. Incidentally, Here is my original youtube link illustrating my problem: https://youtu.be/Qh5pqC4FG8k

Here is the link for where I've gotten so far after removing the platter: https://youtu.be/cltisJQzwb0

I removed the platter and examined the underneath. From the little I know of terminology the idler wheel does not seem to be making very good contact against the pulley motor. What I cannot determine is whether it is because the idler wheel is too hard, or whether there is some type of spring or mechanism that is preventing good contact--or maybe the idler wheel is fine, but something else putting up resistance somewhere...
Thanks,
Ben


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Tue 11, 2018 5:35 am 
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Joined: Aug Tue 24, 2010 8:56 pm
Posts: 4772
Location: Northeast Florida
I watched the video, it was very helpful.

There are several possible issues at play. First of all, you'll want to remove the platter again. Feel the idler wheel---does the rubber feel supple, or does it have a hard, plastic-type feel to it? If it's the latter, you need a new idler wheel. These are available at The Voice Of Music online. You mail him your old part, and he sends you a rebuilt one. It sure seems like a bad idler to me.

The idler wheel will not make contact with the motor when the platter is removed, that's normal.

The platter rides on a bearing assembly, consisting of an upper washer, bearing assembly and lower washer. You'll find them at the bottom of the well where the spindle attaches. You'll want to remove those pieces---based on what I'm hearing in your video, the bearing is gummed up with old grease.

Finally, the motor is attached to the motorboard with three grommets, which often wear out. If they are bad, the motor may not make sufficient contact with the idler wheel. You'll want to remove the back of the console and find the motor. If you rock it back and forth by hand (with power off of course) it should not have much movement---if it does, the grommets need replaced.

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William


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Tue 11, 2018 6:41 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1345
Location: 77001
You definitely need a new idler wheel.

In the video, I can hear the ding in the wheel.
This occurs from the idler sitting against the speed cam
of the motor spindle for long periods of time.

There will be a part # molded into the rubber of
the idler wheel.
Be careful removing that tiny c-clip when taking off
the idler, it will fly off into oblivion.

Also, replace the motor mounts. Those appear to
be original. Mounts are only $1 each from the voice of music.

I recommend you remove the record changer.
Then, you can assess how much old, dried grease is on the
cycling mechanism's parts. For optimum performance
and years of trouble free use, the changer will need a
minimum of cleaning.

Post photos of the underneath of the changer, where
you will find the model #. It will be stamped on the
changer base or there will be a tag glued on with the
changer model #.

One of us will have the service sheets for the changer,
once the model # is identified. It appears to be a later
version of a V-M 1297 type.

Hotwax


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Wed 12, 2018 6:53 am 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
Thanks for the help so far....

Been really busy this week so trying to find time to progress with these steps. presently uploading a video. I finally removed the changer from the console and turned it over. I would like to post some photos but they are too large. A couple problems, first, I cracked a green switch that the wires connected to. :( I was trying to be careful, but everything was fused together and very tight and brittle. So now I think I'll need to replace that.

They main mechanism seems really gummed up. Here's the video: https://youtu.be/498aJcV-uxw


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Wed 12, 2018 3:06 pm 
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Joined: Aug Sun 23, 2015 6:01 pm
Posts: 813
Location: South Jersey East of Philly
AFA the green switch--It is probably the Molex connector switch that controls the power on/off function. If it is bad, you can send the switch and ALL the guts in it to Gary Stork. He must have all the parts or won't be able to do the work. Here's the link http://www.thevoiceofmusic.com/catalog/ ... itches.asp
If this switch isn't working, your turntable won't work, as this controls the power to the motor. But I would try to get it mechanically working by hand first, as it's no use paying for a switch if the unit won't work manually.


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Wed 12, 2018 4:35 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1345
Location: 77001
Ben,
You or someone must do a good cleaning of the changer
and the electric motor, as I and others have posted.

You may try to find a vintage radio club and inquire if any
members can assist you.

The copper spring you mention in video attaches to the
changer base and then onto the speed control plastic cam assembly.

I am attaching a photo, as I am currently restoring one
of these changers

RE: switch. Yes, Gary has those. You must send him all of
the switch you currently have, as these are rebuilt with
new plastic housings.
Also, please post photos here as soon as possible.

Hotwax


Attachments:
V-M 1295.JPG
V-M 1295.JPG [ 200.49 KiB | Viewed 469 times ]
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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Thu 13, 2018 5:14 am 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
Sorry, not sure how to add photos. Can't figure out a way to reduce the file size. I'm beginning to think that I might need to send this in for an overhaul. There are just too many issue going on with it....


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Thu 13, 2018 5:48 pm 
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Joined: Aug Tue 24, 2010 8:56 pm
Posts: 4772
Location: Northeast Florida
That's fine, just make sure you choose someone that's reputable, someone that has experience. I do all of my own, so unfortunately I don't have any recommendations.

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William


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Thu 13, 2018 10:40 pm 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
I think I"m going with David, through Voice of Music. Sounds like he knows his stuff. Thanks for all of the insight and effort! I'll keep everyone posted as to my progress!

-Ben


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Sep Fri 14, 2018 7:30 am 
Member

Joined: Aug Tue 24, 2010 8:56 pm
Posts: 4772
Location: Northeast Florida
If Gary at VM recommends him, that's the highest recommendation you can get as far as I'm concerned. I'm sure he'll do a professional job.

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William


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Oct Tue 02, 2018 1:14 am 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
https://youtu.be/fXm7-_MuCNQ

Thanks to Voice of Music ( www.thevoiceofmusic.com ) for putting me in touch with David Z. I sent the turntable to David and he rebuilt and replaced the following parts:

Rebuild complete Zenith VM A 1293 95.00 J70
Replace idler 45000 35.00
Rebuild motor Alliance 75076 15.00
Replace 3 motor mounts 4.75
Replace A/C switch 45470 16.00
Replace "o" ring to platter 2.00
Replace trim ring to platter 43308-C 8.00
Replace Zenith stylus LP/78 12.50
45 adapter is good sent
Cartridge zenith "bobber type" good at this time
Repair reject jammed
Re set- set downs 7 10 12" good
Arm weight 2 grams
Clean and polish complete
Shipping UPS w/ 200.00 insurance 27.00
Total 215.25
Deposit check -60.00
Balance due 155.25

I think this is more than a fair price and he did an excellent job! It sounds great. I would recommend going in this direction if you are really looking for a long term solution to your turntable issues. Turn around time on this was only a couple weeks. Good luck to all with similar issues.


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Oct Tue 02, 2018 4:56 am 
Member

Joined: Aug Tue 24, 2010 8:56 pm
Posts: 4772
Location: Northeast Florida
Thanks for the update, and I'm glad it all worked out! That's a very reasonable price considering all of the parts he replaced.

He won't be getting my business, though---I enjoy rebuilding my own :D

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William


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Oct Tue 02, 2018 3:36 pm 
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Joined: Sep Mon 10, 2018 12:44 am
Posts: 7
It's certainly a cool skill to have. I'm usually a do-it-yourselfer, but once I looked underneath the turntable and saw everything that could go wrong I knew I was over my head.


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 Post subject: Re: Zenith console Locked turntable troubleshooting help
PostPosted: Oct Wed 03, 2018 2:51 pm 
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Joined: Aug Sun 23, 2015 6:01 pm
Posts: 813
Location: South Jersey East of Philly
Looks like I don't charge enough..... :lol: Glad you got it fixed!!


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