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| | |-+  game king coin in metr disconnect		 0 Members and 2 Guests are viewing this topic. « previous next »
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Author Topic: game king coin in metr disconnect  (Read 5608 times)
deevan
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« on: July 11, 2012, 02:14:55 PM »
hi to all
having a old game king with coin in /meter disconnect error.
i know the logic board is bad.
is there anyone here that knows which part to replace?

thanks
ron

see attachment

* game king logic board.jpg (22.55 KB, 320x240 - viewed 552 times.)
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Tilt
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« Reply #1 on: July 11, 2012, 04:37:33 PM »
That is the I/O board.  When you have both of those error messages appear together the problem is normally on the MPU board (the one below that one).  Assuming you have a 3902 board, the component that normally fails is U74.  Sometimes the chip will have visible damage, such as a crack or burnt spot on it.  If your not sure what kind of MPU board you have post a picture of it and we can tell you.  Welcome to  nlg
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deevan
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« Reply #2 on: July 11, 2012, 05:28:20 PM »
hi tilt
thanks for the reply
the problem is the i/o board.
i checked it in a different machine and the problem followed.
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Tilt
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« Reply #3 on: July 11, 2012, 08:52:42 PM »
Oh Ok, good.  I would replace the I/O switch panel board, in your photo it's the largest of the two boards.  If you're looking at a specific component I would replace U7.
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deevan
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« Reply #4 on: July 12, 2012, 01:08:34 PM »
will do

thanks
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Tilt
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« Reply #5 on: July 12, 2012, 02:07:18 PM »
In looking at the schematics a bit closer the coin/meter signals are processed by both boards, so it's really a 50/50 shot as to which one is bad.  Swap one out, if it doesn't fix it then swap out the other.  Once you know what board is bad we can looks at individual components.
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deevan
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« Reply #6 on: July 12, 2012, 02:29:37 PM »
the small board is faulty
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Tilt
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« Reply #7 on: July 12, 2012, 03:20:38 PM »
Ok, getting there.  With the bad board installed, disconnect J51 from it.  If the Coin In Jam clears, but the Meter disconnected error remains I would replace U5.  Note you may have to open/close the door for the error message to clear.
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deevan
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« Reply #8 on: July 12, 2012, 03:50:09 PM »
coin in jam did clear.
is u5 cd 40106 the same as u7 141068j from a i/o board used in the i game +?
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Tilt
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« Reply #9 on: July 12, 2012, 04:10:48 PM »
Yep, they are interchangeable.  My parts list shows U5 is a 14106 but a CD40106 is installed on my board.  The U7 on my I+ IO board is a CD40106 as well.
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deevan
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« Reply #10 on: July 13, 2012, 10:44:38 AM »
u5 did solve the problem.
thank you very much and i will be back with some other problems.
love this side
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Tilt
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« Reply #11 on: July 14, 2012, 02:32:02 AM »
Excellent!  Glad you were able get it working again, and K+ letting us know it resolved your problem.  It may help others in the future too.  Please feel free to read and learn what you can, and help others out where you can as well.  applause
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