AMI JAH200 Problem??

[dreamen]

I am working on this old time juke box I have had for years.  I quit using some years ago, because a couple power cords were bad.  I replaced the one for the amp and the turn table.  My question is I make a selection and it clicks and registers but the record caddy and turn table do nothing.  There has to be a contact or something that is not registering.  Any suggestions on where to start or what to look for?  Thanks

[jukenorman]

When you say it registers the selection, is it pushing the pin on the selection wheel? A contact on the sprag relay operates the scan magnet in the scan control assembly which starts the carousel motor. You do have a manual?
Norman.

[dreamen]

Thanks for the reply!! No it is not pushing the pin on the selection wheel. The contact wheel in the front of the box is what spins when you make a selection. Yes I have a service manual but have not been able to isolate the problem. Could it be the contact wheel?

[Ron Rich]

Please READ the "Hi Newbies" post in our FAQ's section-- the "contact wheel" could be one of a number of items, and, yes, it also could be the problem, as well as not be the problem. Ron Rich

[jukenorman]

Hi Mark, that "contact wheel" is part of the pulse generator. There is a pulse generator description of operation in your manual and also a descrption of operation of the pulse converter. You need to read these descriptions a few times to gain an understanding of how the selection system functions.
Norman.

[dreamen]

Thanks will check that out and let you know.

[gazzy58]

On reading this post, I thought I would chip in with my thoughts. It sounds like you have a bit of work ahead of you if you want to get this machine functioning reliably. Its not impossible, but will take time. One area I would look at as part of an overall refurbishment programme, would be the record basket/carousel with the pusher pins on the back, (assuming this is the same or similar to the Continental model), you need to ensure these pins have little or no resistance holding them in place. If your machine has been standing for some time, the chances are these pins will have become stiff and will not function properly. They need to be loose. My advice would be to check each and every one of these pins by pushing them in and out several times to free them up. Do not over oil them, but some people suggest using a old rage soaked with a light weight machine oil to help free them up. In the back of my mind, I read somewhere that because the pins and the casting are made of two different types of metal this causes some sort of metalurical reaction and sticking occurs if the machine has not been used for some time. If your machine is original and largely unrestored, I would also suggest you take your time and go through every part of the machine checking all contacts are cleaned and properly gapped/adjusted. I noticed you have stated that you had replaced the power cord for the amp and turntable, but I would check all cords especially the lighting cords which should be replaced if you have any doubts about them. AMIs of this period seem to be notorious for having brittle cords and can become a serious fire hazard if bare wires are exposed. I replaced all mine on my AMI Continental some years back. Replacement cords with moulded two pin plug as per original should be readily available from a number of suppliers. Good luck and let us know how you get on. When addressing this forum, and to make it easier for you to get the correct advice from fellow members, its best if you could describe components and functions of the jukebox as per the manual. I must admit I am not always the best at doing so, but it really will help you. Gary

[Ron Rich]

Best to read the manual too-- I'm pretty sure AMi advised never to "oil", them thar pins Ron Rich