Konami X-men Repair

esqueleto

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Got an X-men from a buddy recently that showing errors on the self check boot up screen as pictured below. Was told it was playing without audio but then completely stopped working.

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It's obvious the custom board was leaky so I suspected there was some damage to the traces and I ordered a reproduction from Ian Kellogg. The schematics for this PCB are incomplete so I could not determine if all the signals to the unresponsive chips were common to this component but I went ahead and replaced it anyway.

I went with the assembled chip so the Caps were already installed. However the original Konami custom chip and Dac chip will need to be transplanted. Carefully remove them from the old board after you remove it and place them in the correct orientation on the new one.

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I'm happy to report that after the chip was soldered into the pcb everything was perfect.
For those interested in socketing the chip its 1.778mm 56 position dual wipe. It will need to be cut in half but will work fine.
 
did you use a hot air station to transplant the custom and DAC? ive had success removing surface mount chips but hand soldering them back on is pretty difficult.
 
Nope.. all hand solder. I don't do enough SMD re-work to buy gear like that.
 
I don't really have any tips... I use an alloy mix to remove the chips. Then I wet the new pads with solder. Draw a line of flux across the pads and set my chip in the correct orientation. Then I use the drag technique to tack it in place.
 
Hot air station to remove the custom makes it way easier. Make sure you get a socket. Check the continuity from the custom to the traces. Good luck with the fine soldering. Its a real pain in the ass for a guy with shaky meat hands like mine.

 
Built my replacement chip and installed it today and it works great! When I first turned it on there was static that wasn't there before. I reflowed everything and the static was gone. Glad I used a socket.
 
I just remove all the caps on the top (can cut them off since your replacing the board) the original board is made out of ceramic, so I just use a butane torch and on the cap side of the board (with caps removed) i heat up the area that the chips are located and use a pair of tweezers if needed (chip usually falls off) and the chip comes of perfect every time.
 
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