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Post by rjgordon0 on Dec 3, 2019 18:56:40 GMT
Hi, I'm new to this site. I recently bought a 1974 Rockola 454 & it has been working great but on Sunday when I switched it on & pressed the three buttons to play a song, the third button stayed in & nothing happened. Upon closer inspection the only way to reset the box is turn it off then on again. I was advised to check the fuses & relays, also clean the points in the credit unit. The wiper arm spins to the correct pin on the wheel but then nothing happens & the third button stays in. Nothing has put the problem right as yet, would anyone know what I should be looking at or has anyone had this problem ? Thanks for any advice.
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Post by Ron Rich on Dec 3, 2019 19:09:22 GMT
Did you read the (red-pinned) stickies above this post, in this section--question has already been answered !
Ron Rich
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Post by rjgordon0 on Dec 3, 2019 19:11:21 GMT
Hi, no I didn't, I'll look now 😎
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Post by Ron Rich on Dec 3, 2019 19:12:56 GMT
That's the idea behind the "stickies"-- also please read your PM's. Thanks, Ron Rich
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Post by rjgordon0 on Dec 3, 2019 21:15:00 GMT
Hi Ron, I must be looking in the wrong area because I can't seem to find the answer to my problem in the stickies you suggested. Can you point me in the right direction please ? Thanks.
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Post by rjgordon0 on Dec 6, 2019 0:28:40 GMT
Hi, I have now found what I think is the correct stickie I have cleaned the rings as suggested but unfortunately I still have the same proablem with the third selection button still staying in when pressed. I have double checked all the fuses & relays & they all appear to be good. If I pull the selection connector from the credit unit then the selection button releases but nothing else happens. I'm thinking the problem may be in the credit unit but I don't know where to start. The jukebox is set to permanent free play so something has been done to the credit unit but I'm not sure what. Help !!!
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Post by Ron Rich on Dec 6, 2019 13:09:10 GMT
What did you use to "clean" the ring ? Did you remove the WI arm ? Did you meter the connections to the ring, when stopped at the selected spot ? Have you checked the WI coils ? Have you looked at the WI relay ? Ron Rich
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Post by rjgordon0 on Dec 6, 2019 16:04:30 GMT
Hi Ron, I used electrical switch solvent cleaner on a clean cloth to clean the rings. I've not removed WI arm. I've also used my multi meter to check that there is continuity between the rings & the WI arm. The relays appear to be working ok but not sure how to check the coils. Kind regards Bob
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Post by Ron Rich on Dec 6, 2019 16:14:07 GMT
Hi Bob,
I have no idea what "electrical switch solvent cleaner" is-- I have had "problems" with some "cleaners" not working here--only one that has always worked was the one named. Coils can be checked with your meter--all of them should have approximately the SAME resistance reading. "--relays appear to be working--" ?? See our FAQ's section on CONTACT cleaning-- Ron Rich
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