Wurlitzer 2410

Hello everyone,
I new to this board and this endeavor. I have a 2410 unit in pretty good shape. Definitely one to clean up and keep. I replaced all the caps in the 536 amplifier. After finding safety switches and the like, I got the amp to power up without jumpers. Switch panel doesn't seem to work, I can manually select records with the pins, and it seems to work ok. But when all records are played and returned, the carousel continues to run. I have a manual, but can't seem to figure out the chain of events to make the carousel park.
Also, is there a free play switch?
Thank you
Ron

You have at least two unrelated things going-on here.

The continuous scanning is usually caused be "crud" displacing the wobble plate or by one of the wobble plate switches being jammed. The wobble plate is what gets tilted when pin pops up. This action causes one or more of the leaf switches to close thus initiating the scan mode.

The lack of keyboard action can be:

1) Blown fuse in the credit unit.

2) Broken coin switch paddle. Are you trying to establish credit with coins?

3) A blown fuse in the amp-power supply.

Essentially, the write-in, readout and scan-changer functions are somewhat independent of each other -except for the power supply.

There is a 'free play" switch in the keyboard assembly. On those later models it was a springloaded slide switch. For continuous free play you can simply remove the spring or flip a long spring in the credit unit (called; Playrak).

It is essential for this mechanism to be well oiled due to stresses involved in pulling down the lift arms (those can be lessened by weakening the springs but get it working first).

The 100's are a bit simpler than the 200 selection models I've owned, but my approach involved large scale disassembly, washing with chemicals and hot water followed by forced-air drying and re-lubrication.

Do you have a service manual?

Rob-NYC

Thanks! I did have a blown 8/10 amp fuse in the coin box electronics. Replaced that, it held, but still no keyboard response. All other fuses are good. The slide switch is working, (spring ok), but it's constantly free play. I'm not trying to use coins yet.
I'm not sure how much movement I should see in the wobble plate, though it is moving. I will check the switches in that area.
And I do have a manual, I'm not sure if there are better ones. This one came with the box when I got it. But it is a reproduced one without any indication of where it came from. There are adjustment procedures but now description of what should be happening.
I keep looking at and wondering there must be some information as to disassembly procedures. Though by just visually inspecting, I'm not sure where to start or how. If there is a better book please let me know.
Also, as you raise the glass front, swing out the panel that holds the song titles, there is a metal handle that swings from side to side and actuates a toggle switch. That appears to allow the relay in the amp to latch. But I'm not sure what the handle is or if it does affect the relay?
Is that the service switch that's mentioned? And I can't find the switch which indicates a record was not returned correctly..
Thanks for any answers, and advise if there is a better book. Mine is spiral bound, with a photo on the front, schematics, parts listing, adjustments, and troubleshooting tips.
Ron
Lawrenceville, Ga

Hi Ron ,
I don't understand your first sentence. If there is no keyboard response, how do you know it's on "free play" ? Or, are you saying that it's equipped with a sliding type switch that is staying on the free play side ? ( SOME models, if I recall correctly, will "lock up" if this switch is held in the free play position or the spring has broken)
Been a long time since I saw a 100 select WurliTzer--so, going from memory--
The wobble plate switches are visible on top of the "electric selector" (ES) and often times "somehow manage to bend themselves"-- I have seen them with the top blades bent down and. or up, and also seen them with the bottom blades bent up--Just look at them--with no pins "released" in the corresponding quadrant, there should be a visible air gap between the blades. I can't recall how many switches were used on the 100's--the 200's used three--one in the rear, where it's impossible ( for me, but I'm old and immobile), to reach, without removing the ES.
As for the manual--IMHO, WurliTzer did not have the best ones--your re-print is probably almost as good as the original, provided you can read it. Remember, you are working with a "jukebox", not a consumer item. All juke makers ran service schools in the USA for their customers tech's. The manuals in the factories view, were just a supplement to these schools. The "best" re-prints are available from the companies listed above, in the announcement/stickies section, of this forum. Ron Rich

I said free play as I can manually select pins and the records will play as long as pins are selected. But pushing keys has no effect. So free play might not have been the best description. I only have about 5 or 6 records in the carousel but if I manually select the corresponding pins, it will catch the pin, release the pin and load the record. It will select the correct record, play it, and at the end, return it to slot and look for another one. So maybe I shouldn't have said free play. There is a large switch mounted vertically on the plate, (I think), that if I depress the switch with my finger, all movement will stop except for the turntable..
I keep looking at the unit, watching it work, then go to the manual, read and try to figure out the sequence. It's slowly coming together. But I guess as you said, the techs were taught in class and the manuals were just cheat sheets as they were supposed to know how everything worked..
If I turn off the amp, everything stops. Turn it back on and carousel starts rotating looking for pins to select. It seems to run forever. If I set the large metal switch in the front of the unit to the left, it w
ill stop, then start right back up when moved back to the right.
I'll see if I can check the switches on the wobble plate and make some since out of it..
Again, Thanks

Hi Ron,
No, "free play" means that you can walk up to the phonograph and push a number and letter button, and have it play the selection, without depositing any money--- Remember--the whole point of a "Jukebox" is to MAKE money !! What you are doing is just "releasing a selection pin". If the motor were not already going, releasing the pin would cause the wobble plate switch to be closed, starting the motor searching for the released pin.
The large switch in front is the record loading switch and mechanical control for the "arms" that detect a raised pin. It MUST be in the service position prior to hand turning the record carousel ('basket") . Failure to do this will result in bent selector pins! This is not a "wobble plate switch"-- RonRich

Looks like most everything working now. Even works with a dime now. That is if working buttons are depressed. Seems I have a few combinations that won't latch, or won't release. I'm working on that now. Some of the wafer type switches on the keyboard are a little tired. Are they available? And either the needle or cartridge seem to be gone. Just the faintest sound from playing record. I've never fooled with needles and cartridges. Can one be bad and not the other? This is a mono box, so I'm guessing only a hi-fi pair will work?
I do appreciate your help Rob & Rich!

Ron, if the amp has not been rebuilt it -must- be or you are literally playing with fire...at least within the amp itself. The transformers can be ruined by shorted or leaky capacitors.

At the time the amp is being rebuilt another consideration is whether to rehab the Cobra circuit or slightly mod the amp to accept a newer cart that will allow better tracking and not ruin stereo records.

I have modded the mono tonearms to mount magnetic stereo carts, but is much easier to simply replace the arm with a later version that has standard ½" mounting studs and will take either a new ceramic, or better magnetic cart.

Here are some pic's of a later arm w/magnetic cartridge:
http://s1192.photobucket.com/user/Rob-N ... rt=2&o=210

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=115

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=211

An external preamp will be necessary, or the existing circuit for the Cobra oscillator can be reworked as a preamp.

Rob

The first thing I did was to recap the amp.
I'll look into changes with the tone arm. I thought there might be a couple of ways to go.
Thanks