Fixing a 70's Rockola 460 jukebox

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Күн бұрын

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@davidstallworth4800 3 ай бұрын

I have valued your videos for months and appreciate them and you . I do have a problem I cant find a solution for- Rock-ola 460 will write -in properly selecting the choice but the hammer does not select the pin to push it for the readout. When I push the pin in to the read out side the readout carriage moves and selects the record and plays it. I have worked for months trying to find the problem- I did find a 120 ohm resistor shorted across the K5-3 relay and have one ordered thinking that maybe the short took the current to ground and did not energize the hammer. I have cleaned all relays, checked connectors, and at my wits end! Any ideas would help! thanks, David (It has to be something in the hammer circuit since everything else operates properly)

@Rex-Ida_Holsteins Жыл бұрын

Thanks for the great information!!

@williamweisel2176 Жыл бұрын

thanks for the kind words. I did see one error in my video.......cross over capacitors that go on the tweeters should be 15 microfarad, not 15 ohm. But any capacitor that is set up as non polarized and is between 11 mf and 18-20 mf should be ok for this tweeter protection. Capacitors don't have to be exact values in these machines......as long as they are within 10-20% of the original cap mf readings, you should be good.

@brianhayes4989 Жыл бұрын

Thank you so much for the info.

@kenrichardson8558 Жыл бұрын

Hello from the U.K. William. I wondered if you could advise me on a problem I have with my Rock-Ola 477 Max. It had worked pretty much perfectly until just before Christmas. I switched it on, all the lights came on and the drum rotated as normal and I put the Scan lever into the Off position ready to remove some discs and replace them with a Christmas selection. First I took some index labels out ready to replace with the new ones then when I went to scan and remove the discs nothing happened, the drum wouldn't move. I switched it on and off a couple of times but still no drum movement but all the lights still came on, then when I tried switching it on and off a third time there was nothing, no movement but also this time no lights. I have checked all the fuses I could find even those behind the power board cover and they all test OK and I have tested the incoming power cable and there is definitely 240volts (U.K.) coming into the box but interestingly the switch doesn't seem to disconnect the power. That is obviously wrong so I assume that the switch is faulty but do you have any ideas what may have blown or where there are any fuses I may have missed. I have manually checked the mechanism works by revolving the turntable and drum rotors so they are not jammed which I know is a common problem. I do have the service manual but my knowledge of electronics and circuitry isn't great. Would appreciate any thoughts you may have. Like you I am very keen to keep it running. Could send you a photo to show you the machine if you wish. Many thanks from the U.K.👍

@williamweisel2176 Жыл бұрын

I am not familiar with the 477. Rockola changed pretty much everything after the 474, and the results were not always the best. I deal with models 436-470 at this time. Maybe try FB Rockola groups for advice. Another resource over your way would be Peter Hillyer in Essex.

@kenrichardson8558 Жыл бұрын

Many thanks for the reply William much appreciated especially the name of Peter Hillyer in Essex. I hadn't thought about FB so I will nip off there now. Kind regards and thanks again Ken

@kenrichardson8558 Жыл бұрын

Hi William just to say a huge thank you again for the info. Have been talking with Peter all morning and we seem to be making progress, what a lovely and helpful chap and coincidentally some common locations and experiences! May need a PSU rebuild but Peter says he can handle that and I have learned a lot on fault finding in the process. Fingers crossed Ken - Rock-Ola on!!😊

@albertocroci6107 Ай бұрын

Hello William... I'm from Italy and looking for something for my 460 that doesn't work so well, I discovered your channel... Your passion is amazing and "contagious" 🙂 I would like to ask your opinion since the problem with my Rock Ola 460 is that it doesn't play the B side of each record... all the tracks starting with 2 plus something... Basically it correctly makes the selection, the selector moves the pin bank correctly, but the external wheel continues to turn and the skate, even if it passes over the raised pin bank, never stops... (sorry for my poor terms I'm not expert on the name of this widgets) I cleaned the tracks and the contacts as best I could, but I wouldn't want it to be some relay (maybe K6 or K7) or a contact on the selection box. Do you have any suggestions? In the meantime, congratulations again and Merry Christmas :-)

@williamweisel2176 Ай бұрын

I would start with sequence 2 in the manual.......which shows that K6 relay (and K7) are both in the circuit. Open the selection control box and reseat the K 6 relay and be sure it is secure). For B sides, K6 does not actuate but its contacts still have to be clean so you may have to do this. Or swap K6 and K7. But more likely, the problem will be in the A/B switch assembly underneath which requires the "alternating dawg" to shift "lanes" underneath and toggle the shifter up and down on the A/B switch.....this is what sends power to the right sided read out circuit board. The alternating dawg often gets gummed up and won't move between the tracts. If this is the case, you need to remove the metal back door and access this dawg. It can be loosened and then cleaned and reseated. If this doesn't solve the problem, then I will have to show you how to trace wires. It goes without saying that all the connections on the A/B switch should be reseated/cleaned as well as the molex connector on the bottom of the machine that goes to the pin drum.

@albertocroci6107 Ай бұрын

@@williamweisel2176 Hello William, first of all thanks for your prompt response.... very appreciated :-) I tried the easiest check switching K6 and K7 cleaning also their contacts, but the problem still persists. Let me modify the message... I just discovered that on Mech Power connector I have NO VOLTAGE at all between 4 and 6 molex pins (it should be -30VDC). All the others voltages mentioned in your video are fine, but I have "0" between 4 and 6. Could it be the cause of my problem? Thanks again for any suggestions. Alberto.

@williamweisel2176 Ай бұрын

@@albertocroci6107 No. There will be no voltage on pin 6 of the red molex at rest referenced to ground pin 4. Pin 6 only gets power when the play control relay kicks in. Pin 1 WILL have -33VDC referenced to ground pin 4 at rest. If your scan switch starts the magazine motor, then you have the voltage you need. I think your problem is underneath with the A/B switch. Scan your magazine and watch the A/B switch to see if it is toggling back and forth.....or not. This is the information we will need to know.

@albertocroci6107 Ай бұрын

@@williamweisel2176 you're right!!! it was something related to the A-B switch... it always remained active because the alternating dog did not jump from one track to the other. In any case it works now... thanks a lot for this help. Very helpful! Best Regards and happy new year 🙂

@jeffficek4228 Жыл бұрын

Looking for assist with Rockola 1765 stepper. Letter stepper shaft is sticky not letting spring return it home. Silver hub on gear shaft has 2 small set screws. Cannot figure out what type of head is on screw to remove. Do not believe it is Allen head. Any help appreciated. Enjoy your posts

@williamweisel2176 Жыл бұрын

I am not familiar with that stepper. I would join one of the FB Rockola groups and post your question.....Rockola Jukebox Club is one

@JohannesForster-lu4rv 8 ай бұрын

Guten Tag Könne sie mir weiterhelfen. Ich habe eine Rockola 560 von meinem verstorbenen Bruder geerbt. Ich bin auf der Suche nach eine Serviceheft und Reparaturanleitung sowie dem Elektroschema. Wo bekomme ich diese Unterlagen. Danke für Ihre Antwort.

@kencekosh2127 Жыл бұрын

I'm working on a Capri. Thanks.

@Kevin-cl7xj 8 ай бұрын

Hi, my parents have this exact model they want to sell. Any idea what a ballpark price range is if it is in completely working condition? Thanks!

@williamweisel2176 8 ай бұрын

Depends on your area. In western Pa, I sell these refurbished working as they should with a 30 day warranty for $695. And, yes, they all sell. But if I ask more, they just languish on FB marketplace. Working condition covers a wide range.......was it recently serviced and amp refurbished? If so, try to get $800-900. If it hasn't been serviced for 20 years and just happens to work, then you won't get as much. These 70's jukeboxes are good machines but don't command big bucks. Don't take less than $500 if it works fine and all the glass pieces are good. If it is in a basement and needs hauled out by the buyer, subtract $100.