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Author Topic: fried keyboard matrix  (Read 1702 times)

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Offline SplurgeTopic starter

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fried keyboard matrix
« on: April 16, 2008, 03:02:34 PM »
Got a 4000 keyboard recently that seems to have some several burned traces throughout the plastic matrix.  Anyone know a place that would have replacements?  I have a feeling that since the traces are on the plastic/film repair is not an option...  Any chance I can mod the keyboard controller to take a PS2 signal?

Thanks all!
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SAM440Flex 800MHz 1GB, OS4.1
A3000D/040 24MB OS3.9, Prometheus/Ethernet/Voodoo
A1200/030 128MB, 20GB OS3.1
A2500/030 OS3.1
A4000/040 dead.. again
 

Offline SplurgeTopic starter

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Re: fried keyboard matrix
« Reply #1 on: April 16, 2008, 03:20:57 PM »
I wish I could do that, but from the number and length of the traces I would need robot reflexes.  There are 3 spots on it where the traces are noticeably darker than the rest, with some residue on top.  They probably spilled something that just ate it away...  

When I test continuity between pads that go through the traces, nothing happens.
Logged
SAM440Flex 800MHz 1GB, OS4.1
A3000D/040 24MB OS3.9, Prometheus/Ethernet/Voodoo
A1200/030 128MB, 20GB OS3.1
A2500/030 OS3.1
A4000/040 dead.. again
 

Offline SplurgeTopic starter

  • Jr. Member
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  • Join Date: Feb 2008
  • Posts: 90
    • Show all replies
    • http://www.neogeofanclub.com
Re: fried keyboard matrix
« Reply #2 on: April 23, 2008, 03:42:25 PM »
Went ahead and swapped it with my 500's matrix since I am mainly using the 4000 right now.  Gives me time to try rkauer's suggestion.  Thanks!
Logged
SAM440Flex 800MHz 1GB, OS4.1
A3000D/040 24MB OS3.9, Prometheus/Ethernet/Voodoo
A1200/030 128MB, 20GB OS3.1
A2500/030 OS3.1
A4000/040 dead.. again
 
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