[Jukebox-list] AMI F-120 JUKEBOX QUESTIONS

[Ron Rich]

Steve,
  Be 150 % sure that the fuse that you have used is not "oversize". You might check every fuse, for size, in that phono--it's the first thing I try to remember to do, before applying power, to each and every "new" (to me) machine.  99.44 % of the time, a fuse "blows" only for a reason. 0 .66% of the time, the fuse just wares out---  Ron Rich

peshkin at comcast.net wrote:
  Thank you so much for the help. It is appreciated. Other than using sand paper which seems to have been improper, I have made much progress. There was a blown fuse that appeared to be causing the power misfunction to the credit unit. The selector buttons are working now (a small miracle for me). I am currently waiting for my manual. 

It is a real shame that the prior owner (a deceased electrical engineer) would do the unthinkable and remove the tube amp and guts just to get a quick fix. 

Thank you for being so understanding about my jukebox illiteracy. I will catch on. 


-------------- Original message ----------------------
From: Steve Wahl 
> On Sun, May 06, 2007 at 11:13:22AM -0400, Dan Peshkin wrote:
> > Hello:
> > I am brand new to this. I have sort of taken up a jukebox project as 
> > a new hobby. I was just given an AMI F-120, and am sad to say that 
> > the prior owner.. now deceased took out the original tube amp and 
> > replaced it with a more modern transistor/capacitor amp. It actually 
> > played a record after sitting 25 years. THe coin mechanism is gone. 
> > if I push on the correct selector under the record mechanism it will 
> > pick up and play the correct record. The problem is the buttons up 
> > top do nothing. The box (I'm sorry I don't know what to call it) 
> > that has the counter in it is still there.. but I assume that the 
> > coin mech at some point powered up the buttons.
> 
> Like others said, you need to get a manual. They're something less
> than $50 I think. For one thing, it solves the "I'm sorry I don't
> know what to call it" problem, as you get labeled diagrams, etc, that
> tell you what things are called, and it makes the conversation here
> *so* much easier.
> 
> Can you read a schematic or a wiring diagram? Use a voltmeter? If
> not (to either or both), do you think you can learn? That's all it
> should take for this particular jukebox.
> 
> The AMI F (and other AMIs with the 80/120 select mech) are really
> quite easy to understand, and an excellent first jukebox -- first of
> two jukes for me, personally.
> 
> > First and foremost. ANy suggestions how to power up the buttons so 
> > that they will work without the coin box.
> 
> It'd help to know what's there and what's not. IF the box you refer
> to above is the one in the center of the lower compartment, above the
> amp (er, where the amp *should* be, your transistor amp may be
> different I suppose); then I think it's the credit unit*. It's a wheel
> / rachet assembly that goes forward for each credit you add, and
> backwards one step for each selection you make. Manually moving the
> wheel forward should make it work. My F is on continual free play
> because the spring that's supposed to pull the wheel back is
> disconnected.
> 
> [ *I think it's called a credit unit; I don't have MY manual at the
> moment; sorry. ]
> 
> Have you tried ALL the buttons? Start with the upper (or maybe
> lower?) left. The buttons are in a series circuit, such that when you
> push the first one, it breaks the chain and none of the rest get
> current; this is so the customer can't cheat and get 2 selections for
> 1 credit. This series circuit often ends up with one or more breaks
> because of dirty contacts, so buttons further down the chain don't
> work. Fix is to clean the contacts where the circuit breaks
> (propperly: using a burnishing tool, or a piece of paper dragged
> between contacts pressed together; NOT by using a piece of
> sandpaper!).
> 
> > Some of the buttons are sticking out. can they be fixed.
> 
> Common problem, rumor is yes they can be fixed, I've not done it
> personally. 
> 
> It's a shame that the original amp is missing. It's likely you don't
> have a mute circuit to cut the sound when a record's not playing. And
> you can't tell if an original amp would sound better until you get one
> to put in.
> 
> As I understand it, that particular amp was used with many AMI mono
> jukes in the surrounding years. A replacement might be reasonably
> available.
> 
> > Do you now anyone in the South Jersey area that works on this type of 
> > machine in the event that I can't figure it out?
> 
> That's not my neck of the woods (MN), sorry I have no idea.
> 
> --> Steve
> 
> -- 
> Steve Wahl steve at pro-ns.net
> 
> I write to make people think. Sadly, in many cases my writing makes
> people think, "Man, this guy is really an idiot".
> -- Nizo, on Slashdot
> 
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