[Jukebox-list] AMI C problems

[Rick Force]

Hi Gary,
It's not the motor, the mech has been rebuilt. Must be either a switch, contact, or open wire problem. I'll keep digging and let you know. Thanks, Rick.
  ----- Original Message ----- 
  From: Gary Young<mailto:gazzyoung_uk at yahoo.co.uk> 
  To: Jukebox mailing list<mailto:jukebox-list at lists.netlojix.com> 
  Sent: Wednesday, September 06, 2006 12:56 PM
  Subject: Re: [Jukebox-list] AMI C problems


  Hi Rick, if you manually lift the selection
  finger/lever and nothing happens, but you can make the
  mech work by tripping the the switch/es at the front
  of the mech manually, then it sounds like the problem
  may be in the motor itself. First you want to
  establish that the contacts on the switch at the back
  of the mech are clean and adjusted (this is the switch
  with the long plate that stradles the two metal bars
  and is operated when one of the bars is raised. I
  think this may be referred to as the bale switch in
  the manual. It could also be that the carbon brushes
  in the motor are worn and not making enough contact on
  the commutator. When you make a selection, try
  "helping" the motor a bit by turning the end of the
  rotor and see if it is trying to work. If this motor
  has not been apart in its lifetime, then it would not
  do any harm to strip it down and clean all the
  parts,including the copper commutator. You may also
  find that all the grease has become hardened over the
  years. Also carefully clean in between the copper
  segments of the commutator. For cleaning the parts, I
  used a bath of gasoline (petrol here in the UK) and a
  stiff paint brush, which I found to be effective. For
  obvious reasons, do this outside or in a well
  ventilated area and protect your eyes and skin. Others
  may suggest something different. Carefully take out
  the carbon brushes which are located one either side
  of the motor. These are tensioned by springs. If you
  find that the brushes are not worn, it is important to
  put them back exactly as they came out, ie they will
  have been worn down to follow the contours of the
  motor, so make sure you dont turn them on their side
  when putting them back. If they are worn and need
  replaced and you cant source correct replacements, As
  a make do, I have used brushes from an old
  hoover/Vacumn cleaner in the past. You may have to
  file them down to size and shape. The same cleaning
  principle I mentioned applies to the other motor, but
  it may be best to do one first to see if it works. If
  this doesnt solve the problem, the only other
  possibility I can think of is the 2 micro switches at
  the front of the machine. I have tried to describe as
  best I can what I think is wrong, but not being a
  technician, I will happily bow to superior knowledge.
  Let us know how it goes. Lets keep the jukeboxes
  playing. Good luck Gary



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