Need for speed Carbon Nos and coin buttons dont work

[sergeantpain]

I have a need for speed Carbon that everything boots up perfectly. Original problem was it had a dead Ram stick which i removed and now it boots right up. Issue I am having now is the only button that works is the start button. I once in awhile am allowed to give credits but it gives credits like 2-5 at a time. I cannot hit the red service button to get into service mode. Some times when I press the service button inside it gives credits. Nos, View, music change buttons never work. Start button always works. I have been able to play the game a few times without those functions. I am trying to see what I Could do to trouble shoot this issue. I was leaning twords the nytric IO board but, It would be strange that it was so intermittent. usually those work or they don't.  Does anyone have one of these for sale or one I could use to test?


Ryan ODocharty

[vandale]

Have you traced the wiring to the i/o board and checked continuity, also checked that the button press is actually completing the circuit? Also check where the loom connects to the board for corrosion, dry joints etc.

If all that is fine then its pointing towards the board