LS2 Constant Cancel

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Topic author
sdtm_glenn
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Posts: 15
Joined: Fri Feb 11, 2011 11:28 pm

LS2 Constant Cancel

by sdtm_glenn » Wed Apr 06, 2011 5:23 am

A Seeburg LS2 seems to be constantly canceling all selections. As is often the case, the machine worked fine...until it was trucked to another location. It now accepts the selection, finds the record, places the record on the turntable, and as soon as the tonearm rests on the record the tonearm lifts and the selection is returned to the magazine.

Testing across the magnetic tonearm switch shows a closed circuit. Disconnected from the circuit, the switch tests as normal. It seems as if there is a cancel switch someplace that is closed. I can find no sign of an external cancel button on the jukebox. Suggestions?


Ron Rich
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Re: LS2 Constant Cancel

by Ron Rich » Wed Apr 06, 2011 4:31 pm

Hi,
The LS-2 like all "45 rpm" Seeburg's has a rear "reject switch". It is located outside, above the "power switch". On that model it was a black "slide switch". Also, on that model, there should be two "plug on wires" on the inside connected to the switch and screwed to the amp's, black and white terminals. That is also the place that any "remote reject switch" would be connected.
I would slide the amplifier out far enough to see if 1. there are any wires connected there, and 2. to see f there is a "short" circuit there. Ron Rich


Topic author
sdtm_glenn
Junior Member
Posts: 15
Joined: Fri Feb 11, 2011 11:28 pm

Re: LS2 Constant Cancel

by sdtm_glenn » Sat Apr 16, 2011 9:26 am

Thanks, Ron. Unfortunately, the box I'm working on is a distance away so I can only work on it intermittently. The part of the cancel slide switch that you would press in broken off in such a way that it resembles a 110/220 switch (flat with a vertical line in the center). I've been working on too many power supplies lately and that is how it registered in my mind. Taking a closer look at it today, I see that it is the cancel switch, but the switch in not connected to the amplifier. The screw terminals are screwed down in such a way that I do not believe the wires fell off in transit. I connected the wires to the amp, but the selection is still immediately canceled. Other than the cancel switch above the power switch and the magnetic switch for the tonearm, I am not sure where to look for problems.

By the way, I just realized that in the past, I've used the Seeburg Mechanism Guide you authored and have found it helpful. In this case, the instructions say to "push the release lever down after the mech detents."(p.34) I am not sure how to identify the "release lever" to confirm the electrical nature of the problem, although I think the check I did with my meter on the cancel circuit is sufficient.

I do not have a manual for this machine yet, so I'm doing the best I can until I can locate one. Any other suggestions would be appreciated.


Ron Rich
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Posts: 8195
Joined: Sun May 06, 2007 11:31 pm
Location: Millbrae (San Francisco area)CA, USA

Re: LS2 Constant Cancel

by Ron Rich » Sat Apr 16, 2011 6:15 pm

Hi,
Thanks for buying the book ! Real glad you found it "helpful" !!
Any model Seeburg book showing a "45 rpm" mechanism will point you in the right direction to find the release lever. You can also see it in my book if you look at the "lubrication guide" pages--it is pointed out--somewhat poorly--best view is the first "guide" page.
If the rear switch is broken--just remove the wires from the AMP side--BTW, unless there is a PRVC in use, there should be no wires on the remote terminal strip ( that could be shorting out ??) Ron Rich

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