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1978 Jennings skill stop slot machine - Do you know anything about this thing?

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Jasonmichael:
Hi all:


I bought this machine on CL a couple of weeks ago not working.  I work on IGT stuff but figured, for the price, it'd be a good way to get into some older stuff.  I somehow managed to get it working (though it still needs to be oiled and for a new candle to be installed) - there's a video here: www.youtube.com/watch?v=YZZzBdJ_YQY -  The fix was despite a nearly absolute lack of information on the web (searched high and low and didn't ever find even one of these in a "skill stop" version even mentioned anywhere).  Really, the fact that it is working now, is more of a miracle than a testament to any skill...  I was able to find a manual for a Jennings 400 which looks just like this machine without the "skill stop" feature.


Anyway, I'm wondering if anyone knows anything about these machines.  Whether I can change out the "skill stop" and convert to a regular machine, what the value (range for condition) might be, how many of them they made, et cetera...


I'm hoping to get the 24 volt light bulbs that go in to light up the coin in, call attendant, prize lines, et cetera, as well. Again, any info would be great!


YOU TUBE VIDEO LINK:  www.youtube.com/watch?v=YZZzBdJ_YQY


Thanks for any help you might be able to provide - even leads would be great!


Thanks!

buybestslots:
if it was a  arcade used game its going to payout over 100% don't get too deep in it  its worth about the same as a jap slot we had some had hard time selling those , jenning were a lot of trouble

Badbaud:

--- Quote from: Jasonmichael on July 04, 2014, 02:15:26 PM ---Hi all:


I bought this machine on CL a couple of weeks ago not working.  I work on IGT stuff but figured, for the price, it'd be a good way to get into some older stuff.  I somehow managed to get it working (though it still needs to be oiled and for a new candle to be installed) - there's a video here: www.youtube.com/watch?v=YZZzBdJ_YQY -  The fix was despite a nearly absolute lack of information on the web (searched high and low and didn't ever find even one of these in a "skill stop" version even mentioned anywhere).  Really, the fact that it is working now, is more of a miracle than a testament to any skill...  I was able to find a manual for a Jennings 400 which looks just like this machine without the "skill stop" feature.


Anyway, I'm wondering if anyone knows anything about these machines.  Whether I can change out the "skill stop" and convert to a regular machine, what the value (range for condition) might be, how many of them they made, et cetera...


I'm hoping to get the 24 volt light bulbs that go in to light up the coin in, call attendant, prize lines, et cetera, as well. Again, any info would be great!


YOU TUBE VIDEO LINK:  www.youtube.com/watch?v=YZZzBdJ_YQY


Thanks for any help you might be able to provide - even leads would be great!


Thanks!

--- End quote ---


The 24 volt lamps are easy to find.

Don't waste time trying to remove the skill stop feature, I am sure the board has been heavily modified.

Would love to see some pictures of the inside of the machine, especially of the main computer board and the power supply behind the hopper.

Of the 4 we have gotten into the shop over the past years I have only been able to get 2 to work.

We have some old, blurry, schematics to work with and without board extenders I need to solder a wire onto a test point then attach it to my scope lead in order to take a reading. Then un-solder it and solder it onto the next test point.

I have devised a way to replace the power supply with a newer one and how to eliminate the battery but your machine appears to be working beyond those problems.

My motto is "works fine, lasts a long time, don't f**k with it".

Jasonmichael:
Thanks for the notes!  Here are a bunch of pictures for you. 


Please let me know where I can get those 24v bulbs - I need to order about 25 of them and am eager to get this up to 100%!


Also, any thoughts on value?  Sounds like it may not be anywhere near what I was hoping - but it must be at least a couple hundred bucks...no?


Thanks!

Jasonmichael:
A few more pics including one of a small toggle switch located just behind the leftmost reel on the board - any idea what this is for?

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