Wurlitzer 2400, selection buttons do not work.

[Jachu]

Hello, I'm new to the forum. I live in Poland and I speak very little English, but I write using a translator. I have the current manual for the 2400, it is in English and I translate it, but it is not easy. I got a Wurlitzer 2400 jukebox from my brother-in-law. It worked for him for 30 years or even longer. She has come a long way and reached me. The window and the overhead lamp were broken. After connecting to the power supply, the lower lamp works and there is current in the amplifier. The rest is without electricity. The "select" key is not lit, the selection keys do not turn on, there is no current on the coils under the keys. Nothing works, reset doesn't work. It was in a container, the contacts were green, but all the contacts I found were cleaned and preserved. All the fuses I found were checked and all are OK. I'm looking for help because this jukebox is magical.
Regards, Jachu.

p.s. If I described something incorrectly or posted it in the wrong place, I apologize. I couldn't understand everything I translated in the regulations, but I tried.

[Jachu]

Slight correction. I was in a hurry with the diagnosis. There is no electricity anywhere. Only the bulb backlight works. The current enters the amplifier and only through it goes to the "power supply, stereo", here is the power socket for the light bulbs. All fuses are good, contacts cleaned and checked with an ohmmeter. I don't know where or why I lost electricity along the way. The electricity does not power anything except the light bulbs. Can anyone on the forum help me?

[jukenorman]

The safety switch? It's operated by the record guide assembly.

Norman.

[Jachu]

Thank you very much for the tip. The manual doesn't say much about it under the name "safety switch", especially when I translate it using a translator, it's hard to find it.
I checked it and it's probably broken because it gives an impulse in both positions. I took it apart and I don't understand why it has an impulse in every position. I ordered a new one.

[Jachu]

So yes... I translated every sentence on the forum related to the phrase "safety switch". And also in the manual where this name appears only in typical faults. There's not much there...
But Ron Rich writes from viperz that:
jukeboxaddicts.proboards.com/post/16894/thread
And I understand that this safety switch is the one that works like a "glass fan" - if it is placed sideways, it turns off everything. And this is understandable to me. I also saw a video on YouTube. But what is this spring switch (described in the manual in Fig. 81. Trip swich setting) activated by an arm with a needle? It has three wires and each of them has an impulse no matter how I position the switch lever. And I think it's broken, so I ordered a new one.
Yesterday I was so fascinated by Norman's information that I wanted to leave work just to quickly check if my jukebox was working again. My wife says she would rather I go to a bar for a beer than sit and stare at a broken jukebox for hours. That it's a disease and he's starting to worry about me. It's good that the jukebox is brought to the first floor, because it would have pushed the jukebox to the garage on its own a long time ago. I would like to pleasantly surprise my wife...
i.postimg.cc/xTFLpVh3/Zrzut-ekranu-23-3-2024-151936.jpg
The red one marked in the photo 1. is the safety switch that Ron writes about, and the red 2. what is it for, how does it work and what position should it be in for the cooker cabinet to work?

[jukenorman]

Item 2 (the trip switch) is what is operated when the record has finished playing - to return the record to the carousel.

Norman.

[Jachu]

Thank you for the information. Please let me know how it should be set up in your free time.
Another topic:
The safety switch has a power supply of 114 AC, but when opening, when I close the arm, there is no current (according to my thinking, it is the opposite of what it should work with a "glass fan". However, when I check the same current a bit further, i.e. at the motor plug, there is no current both open and closed safety switches.

[jukenorman]

This is very difficult. The adjustment is quite simple and described in the service manaul. I appreciate that the manual is in English and it's not your language. But equally, my language is English and I cannot see how I can explain it much differently to the service manual which will also have pictures and diagrams to go along with the descriptions.

Norman.

[Jachu]

Thank you for your time. English, when you translate it, is not difficult because the whole world sometimes calls something in English. It's worse with technical words because in free translation sometimes everything changes the meaning, but that's okay, I've contracted the "jukebox flu" disease and I have to deal with it. There was a time in Poland when they taught us Russian forcibly at school...
Please take some time to tell me what I should look at or pay attention to, and I will handle the rest.
Thank you and best regards.

Jachu

[Jachu]

Norman!!!
Thank you. It was actually a safety switch. It was incorrectly adjusted either due to long transport or because of a broken window. Everything is turning, but for now very slowly, it is making noise and jerking. Maybe because it was unused for 9 years, then moved in a container and was still in the port in a warehouse. But I'm excited!!! Nothing went to waste, at least I translated the entire forum, half of the instructions, watched all the videos on YouTube, improved my English and learned how to build a jukebox. Thank you.

Jachu

[Jachu]

In order not to start another topic, I'll ask here. Thanks to your help, my Wurlitzer 2400S has been playing at my house for half a year. Unfortunately, I have the impression that the sound is not very pleasant, but I don't know what the correct sound should be. Was this the standard in the 60s? I read on various groups that they play very beautifully, but I still think that something is wrong. I have Hi-Fi equipment at home and unfortunately it varies a lot. My wife says that her head is pounding. I have a new original needle that has been waiting for this moment for 30 years.

1. Where should I start trying to find a change in the sound? In my opinion, there is too much bass and too much treble, despite the fact that I have the bass knob at minimum and the treble at maximum.
2. I connected a CD player to the amplifier and it is also hard to hear.
3. I connected large external speakers to the amplifier and the sound was also poor and very quiet, but somehow a little better than on the speakers in the Jukebox.
4. How does the FADER switch work and what is it for?
Regards, Jachu.

[jukenorman]

Hi Jachu,

Your jukebox is 65 years old, the amplifier will require to be rebuilt unlees this is work that has alraedy been done. This usually involves replacing components, capacitors and resistors that are either defective or out of tolerance. It is a bit of specialised job. The phono cartridge could also be defective if it is original. I am assuming here that since you have said that it is a 2400S, that it is fitted with the stereo amplifier.

A CD player is not really suitable for checking the amplifier, the output is too high. An old ipod, personal player or even a smartphone would be better. Nevertheless, the CD player should not have been hard to hear, it should be overloading the input.

THe fader switch is used only when external loudspeakers are fitted and balances the output between the machine speakers and external speakers. If no external speakers are used, the fader switch is set at maximum.


Norman.

[Jachu]

Thank you for your quick response.

The amplifier is stereo and hasn't been touched since at least 1980. I have to have it checked because it's beyond my technical capabilities.

I'll try to connect either a tuner or a deck because I don't know if I have such a cable to connect a smartphone.

I've only just understood how the FADER works. Thank you.

They're supposed to send me a Jensen high-pitched speaker today. Maybe that will change something. Last week I saw that I had the high-pitched speaker connected together with the midrange, and not the high-pitched one with the low-pitched one as it should be. It improved the sound a bit but it still rumbles with bass. Bass at minimum and treble at maximum. You can listen to it but it's terribly tiring for the ear and irritating for my wife. I'll check what I can check and get back to you.

[Jachu]

Hello again.

After initial tests and research when I connected it to the stereo amplifier in Jukebox I came to the following conclusions:
1. When I connected the smartphone it plays quietly but very nicely. Smartphone at full volume, jukebox at full volume and the music plays so that you can talk while listening to it but the sounds are very nice.

2. When I connected a traditional record player it also plays just as quietly as from the smartphone but with quite pleasant sounds.

3. When I connected the CD player the same as the previous one.

4. When I connected the analog tuner it plays very loudly and the sound is very nice and clean. I didn't even think that these old original, stiff speakers could sound so nice.

5. When I listen to Jukebox I have to have the bass at minimum and the treble at maximum and even then it's like there's too much bass and the sound is terribly tiring after longer listening. Listening only for the patient.

[jukenorman]

Hi Jachu,
Maybe the phono cartridge is defective? The Chinese ceramic cartridges of the type fitted to Crossley turntables are very cheap to buy from ebay and might be worth a try. Because they are so cheap, they are certainly value for money! You will also need a mounting bracket which are more difficult to find but here is a link on UK ebay www.ebay.co.uk/itm/393443963936 for the bracket only. The cartridge is also shown in the link for reference.

Norman.