NSM Consul 120 selection problems

[marcol]

NSM consul 120.

When making like 5 selection it only plays 2 or 3 records. Any idea where to look to fix this problem?

Also what should be the correct tracking force ?

Tnx

[Hildegard]

Dear Marco,

Is it first Consul 120 from 1970 or any of the later Consul 120 models?
Does it use drive belts (1970 - 1975) and magnet core for the selections?
Or is it a model with E or even ES, ES II, or ES II-O technology?
What does the ID plate tell?

Is there a kind of pattern which selections do not come? Like always the same or no A- or no B-sides, a specific letter or number which does not work, etc.

Tracking force should be
ca. 5 - 8g for Schumann Merula DB200 (stereo) resp. Schumann Merula DB102 (mono)
ca. 3 - 5g for Shure M17CM (0,03 - 0,05N)
ca. 3 - 3,5g for Ortofon cartridge (0,03 - 0,035N).

[marcol]

Jun 26, 2023 17:18:43 GMT Hildegard said:

Dear Marco,

Is it first Consul 120 from 1970 or any of the later Consul 120 models?
Does it use drive belts (1970 - 1975) and magnet core for the selections?
Or is it a model with E or even ES, ES II, or ES II-O technology?
What does the ID plate tell?

Is there a kind of pattern which selections do not come? Like always the same or no A- or no B-sides, a specific letter or number which does not work, etc.

Tracking force should be
ca. 5 - 8g for Schumann Merula DB200 (stereo) resp. Schumann Merula DB102 (mono)
ca. 3 - 5g for Shure M17CM (0,03 - 0,05N)
ca. 3 - 3,5g for Ortofon cartridge (0,03 - 0,035N).

It’s the top one on this page: www.jukebox-world.de/Forum/Archiv/NSM/NSMConsul120.htm

I don’t have any more information about it sorry. I’ll ask about which selections..

[marcol]

Selections that does not play seem to be random

[Hildegard]

If first Consul 120 your models uses a magnetic core memory unit. On those models it can't be seen if a selection got written-in - or if the problem is the read-out.

But in general I am afraid that is not enough of information. "... seem to be random" is not knowing what happens, hence which selections do not come.
Select and write down all those which do not come resp. which work fine. Then see if there is a pattern. Finding only A sides or only B sides is quite common.
But maybe it is a letter which does not work, or a number.

Maybe this general description of the selection process helps to get a first step: www.jukebox-world.de/Forum/Archiv/FAQ-NSM/Funktion_Allgemein.htm

In case somebody worked on the jukebox before the fault occured, reverse that.
If the jukebox did sit for a long time without being played, then all contacts, plugs etc. need to be checked, all should be cleaned and lubricated new and well.

If not on hand I recommend to get the service manual with schematics. To get the right one check the ID plate of your Consul 120 and the internal devices to be sure to get the right manual with right schematics. Because just by the outside look of the cabinet, it is impossible to say which model it is exactly.

[marcol]

Thank you for the information. I will be there saturday and will clean everything and check if it really is random or the same selections that’s failing to play.

I’ll get back to you after this weekend.

Tnx again and have a great week

[marcol]

Ok so i had the chance to take a look at the nsm today.

When you make some selection like a1, a2, a3, a4 it will play all the selections. No problem there.

But.. when you first select a1, a2, a3, a4 and after that like B1 it won’t play B1. The carriage will go back to the rest/start position and stays there. If you then select a selection like C6 or whatever then it will also play B1.

It’s seems like if the carriage have to pass the rest/start position again it will stop but the selections stay in memory.

Hope this is helpful

[jukeboxmarty]

This definitely seems like a read-out issue, but my NSM experience is somewhat limited.

Hildegard will have the answers!

[jukenorman]

Hi Marco,
I'm not at all familiar with core store NSMs and also don't have any documentation but from what you've written, could there be a problem with the scan control? Is it parking too early, should it not maybe do two scans before parking (like Seeburgs)?

Norman.

[Hildegard]

Hi Marty, Thank you for your trust in me. I am not a technician, so I hope none expects too much.

From what I understand all B- sides do not get played. Like Norman says, the carriage should travel two times to each side.
I think when travelling from left to right selected B-Sides should be played. At the end the carriage activates a contact and the carriage travels back. Doing so a search contact gets switched from one row to the other on the magnet core memory unit. Now all selected A-sides should be played.
If the changeover isn't done then the carriage moves back but cannot find the selections - it "would look" on the wrong row of magnet cores. We show a photo here of the two rows:
www.jukebox-world.de/Forum/Archiv/FAQ-NSM/A-B-Seite-NSM.htm#3

Very often it is a mechanical problem due to hardened grease in the carriage base.
www.jukebox-world.de/Forum/Archiv/FAQ-NSM/A-B-Seite-NSM.htm#4

Hildegard