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having a hard time with a mortal kombat

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Scott84:
Other jamma boards work with sound?

redfivexw:
i tried all those things, i cannot seem to track down the issue, i am going to spend some time today on it.  It has me baffled.

DaveMMR:
Is Mortal Kombat one of those games where you have to go into service mode to adjust the default volume?  I know I had to do that with MKII and MK3 (the Mame versions, that is). 

Vigo:
Could be a short in one of the wires. I would also try taking a multimeter to each end of every speaker/volume wires to make sure you are getting a connection.

Q*Bert_OP:
Check the ribbon cable between the sound PCB and MPU. Make sure its on correctly(red stripe to pin 1 on both sides). Try squeezing the connectors with pliers. I have an NBA Jam out that has a flaky ribbon cable.

All cables that go between sound pcb and MPU present?

-5v present? 

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