Friday, 15 March 2013

Mortal Kombat - An Odyssey Mission to Moscow (Part VI)

The Mortal Kombat saga has been re-animated and like any good zombie it's refusing to die.
After extensive playing I notice that some of the sound effects are misplaced, looping and out of sync.
Now that could indicate an issue with my newly received sound board however it was sold as testing and working and the fault could quite likely lie with cab voltages and other less sinister things.
There are a number of simple things to check here which will hopefully solve the problem with any real effort. Plus I have a spare faulty board for parts if needs be.

All is right in the world. Mortal Kombat 1 now working as it should. For reference here are things I tried with the last fixing the issue.

  • Replaced the interconnecting ribbon cable between the main board and sound board
  • Increased the 5v rail a notch. This was low and needed to be done regardless
  • Swapped the sound roms with those from the faulty spare board

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