Wurlitzer 5250 wallbox selections always release latch pin A0 on 2150 jukebox

I know this post may raise more questions at this point, but I wanted to ask and get started on some ideas. I have a 5250 wallbox plugged into my 2150 Wurlitzer and I just fixed a selector issue on the jukebox itself and it’s now making correct selections from the letter/number buttons at the front of the machine.

The issue for this post is when making any letter/number combination selection on the wallbox, it sends pulses/signals to the junction/stepper, but always releases latch pin A0 on the pin bank.

Here is what I have done so far and what I believe to be true:

• - I have the 5250 manual and have tried to follow the sequential phases, but I haven’t been able to apply it to my problem yet.
• - The 5250 wallbox has different A/B side combinations on the title pages than the 2150 jukebox, but I don’t think that’s related to this issue (I could be wrong).
• - I have cleaned all of the leaf switches/contacts in the Model 2100 junction/stepper, but have not yet replaced any capacitors or resistors. (I know this may be key).
• - The capacitors I see that could be replaced are a .5mfd 400v and a .1mfd, a 500mfd 50v and a 65 to 93mfd 50v.

My initial observations of the steppers on the junction box show the following:

• - The wiper on the left stepper (looking from the rear of the stepper) will vary depending on the number/letter combination selected on the wallbox.
• - The wiper of the right stepper (looking from the rear of the stepper) seems to only go to the third contact point on the contact plate

I know a good first step is to replace all the capacitors under the junction/stepper. Everything happens so quick in there I'm having trouble following all of the movement. Any suggestions at what relays to look at during the process?

Thanks,
Greg

Hi Greg,
I don't know WurliTzers well enough to be sure--but it sounds as if you may have a combination of machine model and wallbox model that are incompatible ? The reason I suspect this is that you say the numbering system differs --
IMHO, they would be the same, if made to work together ? Ron Rich

Gregg, this is a classic symptom of stepper wheels not homing after write-in.

The letter-number system difference on these is NBD. the 2100 use the Seeburg A1-B1 and beginning with the 2200 it was A1-A2.

I've used Seeburg 3WA on a w-2400S and a Wurlitzer box mixed-in with Seeburg 200's in commercial service. All you need to do is renumber the pages.

Rob

Thanks, so what are the general steps needed to check the stepper wheels not homing after write-in? I did end up replacing the .1 and .5 capacitors with no change.

Thanks again,
Greg

Greg,
Just look at the step-up wheels--are they "homed" ? Check with the power OFF--"push" the wheels home --If sticky, a drop or two of 20 wt. motor oil on the shaft(s), --work it in, and you should be good to go ! Ron Rich

I have a 5250 connected to my 2150 and am confused by a couple of things you have said. First, the selections are identical between the two, meaning that I print two identical jukebox strips when I get new records. One goes in the jukebox, the other in the wall box.

I had a number of issues with my wallbox, which ended up being the wiper not being positioned properly. I would always got V0 selected. V0 is the result of the maximum number of pulses coming through the wallbox. Can you tell if you are getting tons of pulses regardless of the selection? If so, I would check the wiper.
Brooks

Ron Rich wrote:Greg,
Just look at the step-up wheels--are they "homed" ? Check with the power OFF--"push" the wheels home --If sticky, a drop or two of 20 wt. motor oil on the shaft(s), --work it in, and you should be good to go ! Ron Rich

They appear to be homed in to the starting position each time.

OK--as I stated earlier--I know next to nothing about WurliTzer steppers---
Don't know what to advise-- Ron Rich

Old Goat wrote:I have a 5250 connected to my 2150 and am confused by a couple of things you have said. First, the selections are identical between the two, meaning that I print two identical jukebox strips when I get new records. One goes in the jukebox, the other in the wall box.

I had a number of issues with my wallbox, which ended up being the wiper not being positioned properly. I would always got V0 selected. V0 is the result of the maximum number of pulses coming through the wallbox. Can you tell if you are getting tons of pulses regardless of the selection? If so, I would check the wiper.
Brooks

I think the difference is just in the program holder with the 5250's being numbered different than the 5210, but they work the same.

Are you referring to the wiper inside the wallbox? It appears to have 3 contacts set in a triangular position?

FYI, I'm going to refer back to Brooks post in January. Seems to have the troubleshooting info I need so I will check it out and report back.

gksnoop05 wrote:

Old Goat wrote:
Are you referring to the wiper inside the wallbox? It appears to have 3 contacts set in a triangular position?

Yes. The motor in the wallbox has a shaft with a pin that goes through it. The wiper mechanism has two pins in it. The pin in the shaft is supposed to be positioned between the two pins on the wiper. Make sure everything is straight and properly aligned

Brooks

Sounds good, I just saw the pins and am looking closer at them with the diagram as well. The whole shaft seems a bit loose to me.