[NJARC] Phono help needed

[Joe Connor via NJARC]

Is there anyone left in N.J. who still repairs the older-style turntables? That would be good to know. My personal success rate with turntable repairs currently stands at 0.0%.
Joe Connor 


     On Friday, May 22, 2015 12:26 AM, Phil Vourtsis <philvourtsis at gmail.com> wrote:
   
 

 Auto correct at its best or worst. The sentence should have read, Need to remove the old lub and put in fresh lub.
On Fri, May 22, 2015 at 12:11 AM, Phil Vourtsis <philvourtsis at gmail.com> wrote:

Sounds like a binding trip pawl. It usually requires taking the sliding mech apart to get to the trip pawl which is underneath the toothed gear. Need to remove the old pub and put in fresh lib. Trip pawl must move freely to start the change cycle.

Phil V

Sent from my iPhone

> On May 21, 2015, at 6:47 PM, Bill Zukowski <n2yeg at optonline.net> wrote:
>
> Just remember
> Reply = Poster
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>
> _________________________________________________________
> I'm repairing (or attempting) to repair a Zenith Cobra-Matic turntable that's part of a ca. 1959 Zenith AM/FM/Phono console.
>
> The manual reject doesn't work, nor will it shut down at the end of the record.
>
> Looking at the attached photo, The problem is obviously the large gear (green) not rotating to engage the platter gear (blue).
>
> When the selector is moved to the Reject position, rod (yellow) moves and pushes against bar (red).
>
> Likewise, when the arm reaches the end of the record, the other end of bar (white) also engages bar (red).
>
> None of theses actions has any effect on gear (green).
>
> If I manually rotate large gear (green) to engage the platter gear (blue) all works according to Hoyle.
>
> The problem seems to be with the (red) bar.
>
> I did notice that the release in the spindle will not retracr to drop the record when I manually activate the mechanism, but I'm hoping that will be "small potatoes" after I figure out the main problem.
>
> I've searched but cannot find any literature on the mechanism.  Can anyone (Phil??) help?
>
> Thanks,
> Bill
> <cobramatic.jpg>
> <cobramatic mechanism.jpg>
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Just remember
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Reply All = Everyone

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