Very innovative record safety interlock solution there Nigel!
I think a good place for this email trail would be for a PDF copy on John’s https://flippers.com website if he can accommodate it. It would be a sort of service slant for the vulnerable AMI models.
If possible, it may also be a good idea to occasionally test the mechanism without records. Even with the retrofitted interlock installed; in a similar situation, I would want to ensure that the micro switch continues to function as it should.
This could potentially save other owners from losing records.
Shankar Singh
On Aug 6, 2025, at 10:54, Nigel Pugh via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I had this on a Rowe Ami that I used to repair and it was only years later that I realised the issue was with a faulty microswitch that was internally connecting the carousel motor before the cam operated it, so as the gripper was returning the record, the carousel would turn, taking chunks out of the records.
At the time I was bewildered and in order to provide some protection I added a long bladed microswitch that only closed the circuit to the carousel motor when the gripper arm was situated above it. It worked a treat, never a broken record again.
On your B I reckon you could set up the same kind of safety feature.
It's probably a contact operating when it shouldn't, but at least this way gives you a bit of reassurance that you won't be breaking any more records.
Nigel,uk
On 6 Aug 2025 at 13:06, Derek Thompson via Jukebox-list jukebox-list@lists.netlojix.com wrote:
This is a bad situation I can hardly believe it myself, I thought it was only a myth that jukeboxes actually broke discs. Had this machine about 13 years and had no problems once we took it apart and lubricated it etc. Within the last year or so there has been a gripper (transfer arm) jamming problem. If you switch the mains off when it jams you can turn the motor by hand and the record is returned to the rack and all continues as normal. Not however if there is another selection waiting to be selected. If you don't switch the mains off quickly enough, the rack starts to move even though the gripper has not yet returned the 78 to the rack! Hence breaking everything in its path. I assumed this was a lubrication problem, however recently the same thing happened again after lubrication, I lost 15 of the 20 discs this time. I assume it is something more, why is the rack starting to move before the record has been returned? You can avoid this potentially happening by only selecting one record at a time, so the rack will not move if there's a problem, but it needs sorting clearly. It can go a long while before jamming, other times it can jam repeatedly, it's random. Am pleased to see this list still exists, it's many years since I used it. Thank You. D. _______________________________________________ Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/
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