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Post by vancityrockola on May 23, 2024 3:00:00 GMT
First time juke owner trying to get a Model 481 Max 2 to work. I'm narrowing down my problem and I'd like confirmation that my troubleshooting diagnosis is likely. As record play is ended the tone arm moves to close the tone arm switch. I've removed and carefully cleaned the contacts here. The next step according to the service manual is for the reverse relay to cause the gripper motor to operate in reverse to return the record to the magazine. This doesn't happen with my juke. Thinking that my mech power supply board was the issue previously, I purchased a used (and apparently tested) board online. After installing this replacement board (complete with both reverse relay and latching relay), I was able to trigger the gripper motor to return the record to the magazine once. After initiating a new play, the gripper motor grabbed the selected record and placed it on the turntable, but I could not trigger the gripper to return the record. After removing the reverse relay and giving it a smack on the palm of my hand, the juke returned the record to the magazine a second time. Since this time however I have not been able to cancel the record from playing and return the record to the magazine. My thinking is that my issue is the reverse relay. Is this the likely cause? Can these relays be fixed? If not I guess I'm looking for a replacement relay. Am I missing any other step that could be causing my issue? Thanks for any advice.
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Post by jukenorman on May 28, 2024 10:38:20 GMT
The manual describes the series of operations quite comprehensively. I think it's fairly unlikely that two relays - even used ones - would be defective (although it is possible). Can you see the relay energising when the tone arm switch is operated?
Norman.
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Post by vancityrockola on May 30, 2024 3:25:52 GMT
I took your advice and revisited the manual as well as my relays. This time I spent more time focused on the latching relay. After removing and giving the latching relay a good shake, reinstalling the latching relay and then powering back the jukebox, the gripper motor operates perfectly, grabbing the record and returning it to the magazine. After this, I can initiate another record to play - the gripper grabs the correct record and places it on the platter. At this point however after closing the tone arm switch, the platter continues to spin and the gripper does not move to return the record to the magazine. I can power down the juke, give the latching a relay a shake and then power back the juke, and the gripper works to return the record to the magazine. I have 2 latching relays though and they both exhibit the same behaviour. Any suggestions for next steps?
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Post by jukenorman on May 30, 2024 8:59:24 GMT
It's actually quite difficult to help you further because you have given us so little to work with! But I'll do some guesswork to move you along. I don't believe that shaking the relay is significant but that the action of removing and replacing the relay (or powering down?) is probably de-energising it. Which leads to - when the relay operates and returns the record, is the reversing relay de-energising? If not, micro switch #1 could be faulty? I think that's the first thing to look at anyway.
Norman.
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sock
New Member
Posts: 34
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Post by sock on Jun 18, 2024 19:59:37 GMT
high did you sort this ? I'm having the same sort of issue I've narrowed it down to the index sequence, when yours puts a record on the deck look at the logic board if the index led is still on this is the problem, if while the record is playing you slide the scan lever towards stop slowly you will hear a click and the led turns off if you then slide the lever back to operation the record will play to the end and it will then be pit back in the basket. I'm still trying to fix my problem if I do I will post the results
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