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Author Topic: Key Chip Question for the 3902 board  (Read 702 times)

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Online Amechanic

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Key Chip Question for the 3902 board
« on: September 21, 2016, 07:27:10 AM »
It's been a couple years since I had to setup a game with the 3902 board. I think I have a #40 key chip from setting up my Game King slant top. I'm now working on a 17" GK and I see other Key Chips, #17 and #22.. What the best one for what I'm doing?

Thanks, Gary
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Offline oldgeiser1

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Re: Key Chip Question for the 3902 board
« Reply #1 on: September 21, 2016, 08:18:37 AM »
22 is what I use all the time, it gives the option of doing keychip functions without clearing, as 17 does not.

Offline smoothgrh

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Re: Key Chip Question for the 3902 board
« Reply #2 on: February 13, 2018, 11:12:38 AM »
Should a 17 keychip work on all 3902 boards?

I have one that works fine on older games like Neon Nights, but I used it on Kingpin Bowling and when I reverted it back to the base chip, the game turned on as if I never installed the key chip. (There were no credits on the machine.)

Maybe I just did something wrong?

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Re: Key Chip Question for the 3902 board
« Reply #3 on: February 13, 2018, 11:18:39 AM »
Should a 17 keychip work on all 3902 boards?

I have one that works fine on older games like Neon Nights, but I used it on Kingpin Bowling and when I reverted it back to the base chip, the game turned on as if I never installed the key chip. (There were no credits on the machine.)

Maybe I just did something wrong?

I like to use the 22 key chip.. I do have a 17 and only had to use it once.
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If it's jammed, force it.. If it breaks, it needed to be replaced anyways...

Offline Caliwebman

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Re: Key Chip Question for the 3902 board
« Reply #4 on: February 13, 2018, 11:30:20 AM »
Hi Guys, could you tell me what might be going on when I try a 22 and/or a 17 chip and upon restart I get a rainbow confetti screen?


Thanks,


Scott

Offline smoothgrh

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Re: Key Chip Question for the 3902 board
« Reply #5 on: February 13, 2018, 11:32:14 AM »
One time when I installed the chip, a pin was sticking out, resulting in a confetti screen. Be sure that all the pins are seated!

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Re: Key Chip Question for the 3902 board
« Reply #6 on: February 13, 2018, 04:20:36 PM »
like smoothgrh said check for bent/broken pin also double check the chip is not in backwards. 


there was another post recently going where someone had a confetti screen it turned out to be a bad power supply.  ( http://newlifegames.com/nlg/index.php?topic=18873.0 )


hope its something simple for ya.

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Re: Key Chip Question for the 3902 board
« Reply #7 on: February 14, 2018, 07:51:31 AM »
40 is the upgrade for 22 still same three options
Thank You
  Mark

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Re: Key Chip Question for the 3902 board
« Reply #8 on: February 16, 2018, 02:18:07 AM »
Thanks All! But still no luck. Replaced the PS with known good PS and no change. Pins are all good. So Mark, are you saying I could also try a 40 chip on this 3902?

Scott

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Re: Key Chip Question for the 3902 board
« Reply #9 on: February 16, 2018, 03:03:35 AM »
yes thats what i use
Thank You
  Mark

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Re: Key Chip Question for the 3902 board
« Reply #10 on: February 16, 2018, 09:09:14 AM »
Thanks All! But still no luck. Replaced the PS with known good PS and no change. Pins are all good. So Mark, are you saying I could also try a 40 chip on this 3902?

Scott


Are you still having the same issue with your screen on start up? If yes did you go read the other thread where they had a power supply problem with the monitors PS, not the one for the cabinet.
Please remember to make a donation to NLG for mine/our help in repairing your machines problem.. Your donations help keep this sight on line.
And remember...
If it's jammed, force it.. If it breaks, it needed to be replaced anyways...

 

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