Wurlitzer 5220 wall box speakers

I have restored a Wurlitzer 5220 wall box. Everything is working, except the speakers will not function properly. The speakers only come on when a song is already playing and another song is selected. As the cam rotates the speakers come on, and then turn off when the cam reaches the rest position.

Can you provide some guidance on where I should focus my troubleshooting to correct this issue? Many thanks for your support.

Hello tmschutte51,
I don`t fully understand the interaction between the wallbox and the stepper for audio, but from the schematics I would conclude that the speaker relay in the wallbox is held active through Pin5 of the wallbox connector which goes to the contacts of the "audio control" relay in the stepper.
Maybe a starting point...
Rgds Jürgen
PS: I think the stepper audio relay is active as long as selections are made from any wallbox. Contacts 8/12 of the wallbox speaker relay ensure that the wallbox only plays audio if a selection was made on this particilar wallbox before.



2 mal bearbeitet. Zuletzt am 16.07.25 09:08.

Hallo tmschutte51!

Some years ago I connected a 5220 Wallbox to my Wurlitzer 3100 and had the same problem.

I found a copy of a copy of the original istallation manual. Sorry, I searched for it but I can not locate it now...

As far as I remember, originaly with the stepper came a bracket with an extra switch and wiring.
It had to be installed next to the transfer / mute and play switch on the main mechanim.
The wire from that extra switch goes to some terminal on the stepper (261 B... i think) and operates (grounds??) the audio control relay in the Wallbox.

It was a bit tricky to follow the lines in the wiring diagram...

But to be honest, I solved the problem in a "russian way" by blocking the audio control relay with a pice of folded paper under it`s cover. ...just for testing.... working now for over 10 years... and I totally forgot about it...

I`m sorry my english is a little bit rusted... but I hope this will help You!

Best wishes from Vienna,
Hans.



3 mal bearbeitet. Zuletzt am 16.07.25 09:43.

Hello Hans,
contact 8/12 of the speaker relay work as a self holding circuit as long as pin5 is grounded. The "russian solution" should turn on the wallbox speakers permanently after the first selection was made on the wallbox. If you make a second selection on the Jukebox, the wallbox speakers will still be on - correct ?
Rgds Jürgen

Hello Hans and Jürgen,

I appreciate both of your responses. I, too, tried slipping a piece of paper under the speaker relay contacts, and this does keep the speakers on. I disconnected the extra switch thinking it might be part of the problem, but maybe I should reconnect it. I need to look at the audio relay in the stepper. What is strange is that the speakers come when a selection is made from the wall box. They only stay on for as long as the wall box can rotates.

If possible, I would like to avoid the piece of paper solution.

Kind regards,
Todd

PS. I have the original instruction sheet that describes the switch that is mounted up in the mechanism. What I’m not sure of is the ‘at rest’ position of the contacts open or closed. Can you please advise?

Kind regards,
Todd

Hello Todd,

"What I’m not sure of is the ‘at rest’ position of the contacts open or closed. Can you please advise? "

This, I cannot tell you - if you post the Instruction sheet and let me know the Jukebox and Stepper model, I could try to figure out. From looking at the 259B schematic, the Audio Relay is controlled by wire #53 which goes to Stepper PLug II #3 Pin 10. When there is no selection playing, the relay should be off. It must be turned on when a selection is made at the wall box BEFORE it finishes the rotation.

"What is strange is that the speakers come when a selection is made from the wall box. They only stay on for as long as the wall box can rotates."

During the rotation the speaker relay is activated by the contact "speaker switch" inside the wall box. When activated, contacts 8/12 close which keeps the relay on as long as Pin5 is grounded through the Audio Control Relay in the Stepper. The purpose of this is to avoid that other Wallboxes connected to the same Stepper get an audio signal without paying.

Rgds Jürgen

Greetings Jürgen.

The jukebox is a Wurlitzer 2900, and the stepper is a 261B. Unfortunately I cannot upload the instruction sheets, because the file size is too big. I read that the contact should be normally closed.

Thank you for your assistance.

Todd

Greetings Jürgen.

I found the audio relay in the 261B stepper. I cleaned the contacts. It appears the contact is normally closed, and power opens the contact. Is this correct. The contact doesn’t move very much, and I would like to test this relay before reinstalling the stepper in the jukebox. Can you provide guidance on how I might do this? The audio relay is mounted on the bottom of the stepper, and it is not accessible once the stepper is connected to the junction box in the jukebox.

Thank you for your help.
Todd

Greetings Jürgen.

The jukebox is a Wurlitzer 2900, and the stepper is a 261B. Unfortunately I cannot upload the instruction sheets, because the file size is too big. I read that the contact should be normally closed.

Thank you for your assistance.

Todd

Hello Todd,

"I found the audio relay in the 261B stepper. I cleaned the contacts. It appears the contact is normally closed, and power opens the contact. Is this correct."

I could get a schematic of the 261B stepper, according to the drawing this is correct.

"The contact doesn’t move very much, and I would like to test this relay before reinstalling the stepper in the jukebox"

You can apply 28V DC to the relay coil for testing.

I`m not sure about the purpose of the additional parts that are mentioned on the "instruction sheet".
From the schematics I have, it looks like all signals to control the Audio Relay in the Stepper and the Speaker Relay in the Wallbox are already available in the 2900 Jukebox and in the 261B stepper. Maybe this is only needed for a 261 stepper without Audio Relay as it is shown in the 2900 Manual or for older versions of the 2900?

Anyway, your Speaker Relay seems to work correctly when it gets the Ground from the "Speaker Contact" in the Wallbox while the motor rotates (dark blue in my picture). However, there seems to be no Ground coming from the Stepper Audio Relay (light blue). Please also check if contacts 8/12 at the Speaker Relay works correctly. (closed when Speaker Relay turned on)

Note that Signal 26 in the Stepper could provide directly Ground to the Speaker Relay even without the Audio Relay turned on. So I still don`t understand the interaction between the Stepper and the Jukebox in all detail.

Rgds Jürgen



1 mal bearbeitet. Zuletzt am 28.07.25 09:11.

Jürgen,

Many thanks for your reply. Between the cleaning the audio relay and properly adjusting the speaker contact switch in the wall box - the speakers are working!

Kind regards,
Todd