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Repair Journal
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Problem D: I thought this problem was solved but to my dismay I discovered that all selections were working EXCEPT any selection with a 6 as the middle digit. I tried various things and even went so far as to remove the keypad and cleaned and straightened out all the contacts. I put it back and still any selection with a 6 as the middle digit didn't work. In that process I created another problem. Once the second digit was selected, the lockbar solinoid began to chatter / buzz and the number was not accepted. So... Problem Q is determined. Problem Q: Busing Lockbar solinoid The trouble shooting manual was very helpful for this problem as there is a specific 'chapter' for this very problem. There were two possiblities, a bad diode in the selection control box and a mis-adjusted or dirty switch in the keypad section. Well.. since I had been messing around so much in the selection control box I checked there first and sure enough the diode 'fell apart' during my attempt to test. So.. a trip to radio shack for a cheap diode, a little bit of soldering and that was corrected. In the photo at the left you can see the new BLACK diode attached to the center fuse point. However, I still had the problem. I tested the switch that should show as normally closed (NC) and was not getting continuity so I pulled out the keypad and cleaned and adjusted and put it all back. This process fixed the 'chattering' solinoid and allowed selections to be made. Problem Q resolved! |
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Well, it seems that my messing around with the keypad and selection board has been more harmfull than helpfull as now neither 5 nor 6 will work as the middle digit. I tested and tried a lot of different things but really could not resolve the issue. So I broke down and spent another $25 and ordered an original service manual off of eBay. Oh.. did I mention that I tried to correct the credit count as it was giving two credits for the quarter instead of one and in the process made that worse too!?! So here's my new current list of problems that I hop to resolve when the service manual arrives:
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Problem G: While I was waiting for the service manual to arrive, I went to Radio Shack (I go there more than I used to!) and purchased a pack of bulb holders. Unfortunately these holders have wired connection points instead of circuit board 'legs'. Using my side cutters and pliers, I trimmed down the connection points and then bent them to match the original holders. I was then able to replace the old sockets with the newly modified ones and all my lights now work! Problem G solved! Problem M & N: During the process of working on the lights and keypad, I dropped a small screw in the bottom of the case. Since I was digging around in there I decided to go ahead and clean out the bottom of the jukebox. In doing so I found the missing 'Selection Now Playing' card. Woo Hoo! I cleaned both cards by removing the dirt and scraping off the old glue. I then put on some 'Super Glue' and put the cards in place. Problem M and N solved! |
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Problem D: With the arrival of my service manual, I dove into the work of solving my selection problem. Using the service manual I learned how the wiring connected from the circuit board to the selection wheel. Using my Ohm meter, I determined that I had continuity between all the connections to the board and the contact points on the selection wheel. That seemed to confirm my suspicisions about the selection board. However, I pluged it all back together and decided to test for the voltage at the connection point on the board for the group that wasn't selecting properly. So, I put my ohm meter at the point of connection and pushed the "bad" selection group and not only did I get the voltage that it should.. the record played! Wow, did I fix it? So, then I closed the lid and pushed different selections. Sigh... other selection groups are now not working. Frustrated I closed the lid and walked away. I went back to an older email I had received from "jukeboxsteveinindy@sbcglobal.net". In this email he was responding to a request to see if I could purchase the chips for my selection board. Steve explained in his email that he had never seen a bad board, but instead encountered many machines where the edge connectors where not making good contact. He instructed me to clean the connectors and then use a small screw driver to make sure all the connection wires in the cable end piece were raised up above the plastic connector. I did exactly has he instructed and BOOM! all the selections work now! THANKS STEVE! |