[Jukebox-list] Grill tubes/glass tubes

[David Breneman]

--- Jackie <etreble7 at comcast.net> wrote:

> As far as the 
> "continuous play" not having a book and knowing nothing at all
> about this machine, it is a mystery to me.  

Well, there's an easy way to check whether they're getting
cancelled.  If you take off the back upper cover (the one
you need to remove to take the mechanism out) you will see,
behind and below the record rack, a long frame with a bunch
of flat, popcicle-stick-like levers sticking out of the top.
There is also a block, connected to the mechanism, that
slides back and forth along the top of this frame as the
record changer scans back and forth.  When a selection
is made, an electromagnet inside the frame pulls a lever
outward from the middle.  As the block moves across the
frame, a moved-out lever will hit a switch, causing the
mechanism to stop and play that record.  Along with the
two switches on the block are two little coils, each one
with a plunger inside it.  When the record begins to play,
the coil will momentarily activate, pushing down the
plunger, and pushing the lever back towards to middle.

The best thing to do is to go in and push all the selection
levers in.  That is, the ones on the side facing you get pushed
away from you, the ones on the side facing the record rack
get pushed towards you, so the two rows are leaning towards
each other.  Once all the levers have been reset this way,
the mechanism should stop scanning.  Now, pull one lever from
the row facing you out, ie, back towards you.  The mechanism
should start to scan, and stop at that lever.  Look at the
top of the reset coil and see if the plunger moves to
reset the lever.  It probably won't, and the lever will
remain out, and the selection will repeat over and over
until you push the lever back manually.  If this is what
happens, the reset coil is either gummed up so that the
plunger does not come out, the coil is not getting the
electrical pulse to activate it, or the coil has an open
winding and is not completing the circuit.  I'm going to
bet that it's #2, and it's the the reset relay that isn't
completing the circuit, and the coil isn't getting its pulse,
since both coils seem to be effected.  So, you'll need
that multimeter :-) and the wiring diagram to proceed.  The
Seeburg manual has some pretty easy to follow block diagrams
that show the chain of events and where the current flows.
It's just a process of elimination at that point.


David Breneman         david_breneman at yahoo.com

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