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Hi I have a Wurlitzer Estrella 200 and wanted to fit a remote control. The manual mentions that the H82 amplifier fitted to this jukebox has a remote control motor (40083004) fitted and that this is to allow the use of a wireless remote control (40083 infra red). Does anyone have a remote system for sale or know how this wireless system worked so that I could make one.
Thanks,
Philip
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Cquadphil
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Alles rund um Musikboxen
Hi I have a Wurlizter SL600 that we cannot open. It is my friends jukebox and he thinks the lock may have been twisted. The key is stuck in it and turned about 30 degrees clockwise from the "insert" position. The key will turn about 30 degrees clockwise and will spring back. it will not turn anticlockwise. When you turn the key clockwise it seems to move some levers in the door panel bu
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Cquadphil
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Alles rund um Musikboxen
Hi all, I've just started to restore a 1979 Wurlitzer Lyric. I want to get the mechanism working first before fixing the cosmetic problems.
the machine powers up Ok with the lights working. If I trip the credit switch the credit is registered in the accumulator unit with the cog wheel moving. The input keys latched and it seemed to load in a selection. At that point I could hear a motor
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Cquadphil
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Alles rund um Musikboxen
Hi Swen, thanks for the reply I think I worked out the problem. There are two parts to the connection of the tone arm and the central spindle. They sit on top of each other and the adjustment screw and a spring at the back of the tone arm are the mechanism for adjusting the tonearm start position by moving the two parts relative to each other. I discovered that on my jukebox the parts had over th
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Cquadphil
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Hi I'm having a problem with my Wurlitzer Estrella 1983 tone arm. I does not start at the correct position on the record. I have tried adjusting the screw at the back of the tone arm (TA in the manual page 15). I have tried tightening this to move the starting position of the tone arm further into the record. It works for the first time after adjustment then starts to miss the start again. I
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Cquadphil
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Hi Catboy, sorry it took a while to get this tested I've been travelling with work this week. Excellent advice! I confirmed that Pin 1 was grounded, it was, and then tested the SCC by shorting in "111" and the jukebox played the record, great news. I then tested the switches on the keyboard. they all seemed OK but I gave them all a good clean and then also cleaned the connector pin
von - by
Cquadphil
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Alles rund um Musikboxen
Hi I have a problem with my Wurlitzer Estrella 1983 Jukebox. It has been operating fine for months after I finished restoring it but suddenly it will not register any inputs from the selection buttons. The problem seems to be only associated with the input switches registering with the microcomputer. If I put it in "play simulation" mode it will play the same record every 20 minutes or
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Cquadphil
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Hi Jürgen, thanks for the quick response and such a comprehensive answer. I will order and install the recommended cartridge. I have also read the posts on adding the RC matching network, you have done a lot of good work in the area. I will also try to install the RC network. I will need to source the surface mount components and improve my soldering skills.
Thanks
Philip
von - by
Cquadphil
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Alles rund um Musikboxen
Hi I'm fixing a Rockola 1484 jukebox. It basically works pretty well, some lights need fixed and a few switches cleaned but overall it's in good condition.
The main problem is low volume and poor sound quality. I think this is because of a damaged cartridge. I have attached a photo of the cartridge with the stylus removed. To me it looks damaged and not properly connected. This migh
von - by
Cquadphil
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Alles rund um Musikboxen
Just to close out this thread, the final problem was the grub screw. It was loose and after a bit of adjustment and tightening I got the tone arm working ok. I then had to adjust the cut off switch for the end of record K3. With all that in place the Jukebox worked properly for the first time, playing and replacing selections from the keyboard.
It was great to finally get everything working.
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Cquadphil
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Hi all I have had a close inspection of the tone arm and I think I have found the problem. The small worm screw that I have highlighted in the picture below was lose. I think it's item 21 in the tonearm diagram in the manual an M3x4mm screw. There is a hole for another worm screw at 90 degrees but it empty.
Does anyone know how to setup this worm screw. what is the position of the tonearm
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Cquadphil
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Tonight I put he amplifier back in and after cleaning the switches and contacts, it sounded better.
So then I started working on the tone arm. I can't work out if it just needs set up or if there is a part broken or missing, maybe the spring I found. I did test the contacts under the tone arm and they were not good, they worked a lot better after I cleaned them.
I've taken a coupl
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Cquadphil
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Alles rund um Musikboxen
Good news, I think the SCC is fixed. I took it out today and lifted it off the backing plate. There was some oxidation on the underside that I cleaned off. Then I replaced the reset capacitor C22 and the PIA and CPU chips. when I put it back in the machine the keyboard and display started to work correctly for the first time.
When I tested it there are still some problems but I don't thin
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Cquadphil
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I took out the PIA chip and bent back PIN 5 so I could look at it on the scope, isolated from the rest of the circuit. It just stayed at 5V no matter what I tried to get the box to do. this is not right so maybe the PIA chip is faulty, I've ordered a spare and it should be here in a few days. In the meantime I'm going to have a look at the CPU/PIA interface. It will be really hard to wo
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Cquadphil
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So I checked the 3x 7 segment display common cathode driver transistors T6 T7 T8 were switching in turn with a scope and it seemed to be OK, not sure about the levels but the timing was ok.
I got a cheap 8 channel logic analyser off ebay and it worked well with some free software. I used it first to look at Pins 2,3,4 and 5 of the PIA. Pins 2,3 and 4 are the lines that send the switching infor
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Cquadphil
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Great progress, the new stylus arrived and I fitted it. I was then able to cycle the gripper arm and get it to play a record, except the tone arm had to be manually placed on the record. It was great to hear the Jukebox play music.
Planning some more testing of the SCC later. I want to see if the multiplex signals for the keyboard and the displays from the PIA look right. Also the capacitors a
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Cquadphil
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Thanks for the info. It is a EPROM chip M5L2732K with a sticker on it, which I think says MBOX 2.5. Is it possible to get the checksum to test it.
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Cquadphil
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So I tested the supplies: 14V with 2V ripple, 38v with 1v ripple, 5V with 2mV ripple. Not the worst but I've ordered new smoothing capacitors.
The forced reset of the CPU did make the display numbers change but it did not fix the problem, after a few second it went back into the same broken state, displaying 889 and not reacting to the keyboard.
I then tried to check some of the tests
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Cquadphil
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Alles rund um Musikboxen
Thanks, that's a good idea, I'll force the reset. I've seen some scope shots in the manual I'll try and see if I can test them also.
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Cquadphil
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Tonight I did a lot of work on the SCC but without any progress.....very disappointing.
I checked all the power supplies are good.
I took the SCC out removed, cleaned and reseated all the IC's in sockets, the sockets were dirty but it made no difference.
I think the power on reset is good but I will change C22 to be sure. I will also try and capture the reset on a logic analyser tomorrow.
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Cquadphil
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Worked on K7 tonight desoldered it, removed and tested it, it was faulty on K7/2, dirty contact, gave it a good clean and it works now. Refitted K7 and now I can get the M3 solenoid to pull in and move the record rack, good news.
I tried to get the gripper arm to lift a record. It will lift it off the turntable and put it back in the record rack but it can't lift one out of the record rac
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Cquadphil
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Thanks for the link, I checked and that spring is in place. There are some other springs listed on that site that I will also check.
While I was checking under the tone arm I found this small screw in the bottom of the cabinet. I've had a real close look at it and it has not been sheared this was its original size. Where is this from?
Thanks again.
von - by
Cquadphil
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Hi the test with the socket contacts is the same as you suggested with the SCC blue connector. it was successful and the gripper motor worked and cycled the gripper arm and the turntable motor, I'm very happy with that. I also tested the A/B solenoid M6 and it worked.
So a lot of key parts on the chassis are working, which is great. There's a couple of things left on the chassis tha
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Cquadphil
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It looks like the faulty shorted load/operate switch is not the problem, it carries the supply for the SCC and it being closed all the time is ok. I spent al lot of time studying the manual tonight and noted that this line actually carries 30VAC, and when I switched the meter to AC that was correct.
While I wait for some parts to arrive to test the SCC and display I'm going to focus on th
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Cquadphil
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Sorry not a lot of time tonight just managed to test the service switch and load/operate switch on the chassis:
The Service on/off switch is operating OK but it has -30v on it not +30v, relative to 0V on the SCC.
The load operate switch beside it is faulty it is a short circuit in both positions and has 0v on it.
I'll try and do some more later.
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Cquadphil
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Yes I was on the wrong service switch, I was on the test/operate switch beside the SCC. I'll test the switch on the chassis first thing tonight.
Thanks again, this is really interesting.
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Cquadphil
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Thanks for all the help. Tonight I cleaned and tested the test/operate switch, its working. I don't get 30v on the test switch I get about 5V with about a 0.5V drop when I switch it. I have a red wire with 30v from the bottom coin switch pin on the SCC going to the switch assembly but its wired into the simulator switch. The other two wires (green and violet) go from the switch assembly to t
von - by
Cquadphil
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Alles rund um Musikboxen
Hi, thanks for the help.
Tonight I did dismantle and test the light switches on the record holder. The light was not working, the lamp was OK but it had a dirty connection, the photo transistors are ok. When I cleaned the lamp holder it started to work. The record holder still will not rotate but when I rotated it manually the K and Z LEDs on the SCC are now working.
I have attached a phot
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Cquadphil
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Alles rund um Musikboxen
Hi all and thanks for the add to the Forum. I've been searching around the topics for a few days, you sure do know a lot about Jukeboxes.
I need some help with getting a 1982 Wurlitzer X202 Estrella back to life. I'm an experienced electronic engineer living in Ireland and I've fixed up pinball machines and guitar amps in the past but this is my first jukebox. I've got a f
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Cquadphil
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Alles rund um Musikboxen
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