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Author Topic: Game King meter disconected by short in comparitor.  (Read 6685 times)
memusa
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« on: May 15, 2009, 03:04:51 PM »
Well here's the story, someone saw the red wire loose in the comparitor CC-16D, so he decided to place the wire inside the black wire too.... stir the pot / get cooking. as soon as he did this the typical smell of something burning appears in the machine hissy fit.
So after looking the IO boards, one of them has a burn trace, which I repair. But the thing is that now on screen appears meter disconected, coin in jam, coin in sequence, hopper malfunction player paid (amount of coin increments) ..... can it get worse? lightning bolt lightning bolt lightning bolt lightning bolt

The IO boards I already installed them in another machine and they work just fine, the problem is in the processor board cause as soon as I power on the machine the change, cash out and hold 2 keys light up.
The board its a 7570380 and clear procedure didn't fix the problem.
Any  Help

Thanks in advance.
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blueridgeslots
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« Reply #1 on: May 15, 2009, 08:29:53 PM »
I think it is U-72 or U-73, off top of head, it probably has a hole burn in it
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blueridgeslots
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« Reply #2 on: May 15, 2009, 08:39:49 PM »
Might be U-74 as my memory is gone
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memusa
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« Reply #3 on: May 15, 2009, 08:57:13 PM »
Thanks for your suggestions, as soon as I get the spare parts I'll replace those ICs and let you know if they work. In the mean time just for illustration U72 is a 75453N .... U73 is a MC14081CP and U74 is a MC14001BCP. Those ICs look fine, with no exterior damage on them.....
Thanks for your help
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kforeman
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« Reply #4 on: June 25, 2009, 01:31:45 AM »
could also be the motherboard got toasted!
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memusa
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« Reply #5 on: June 25, 2009, 06:58:04 PM »
Guess u r irght, cause I have more of those boards and replace it.  loser
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