Gentlemen,
I have a Mortal Kombat 2 that was working perfectly. I turned it on today and made it through approximately 2 minutes of gameplay before the sound abruptly ceased. My control panel was not latched so I pulled it up to check if the LED on the sound board was still on (which is view-able from that angle and it was still on). I immediately smelled electronic burn. I put a test PCB in the cabinet and everything worked fine. This narrows the problem to the sound board, which has a residual electronic burn smell still coming from it. There are no traces of burn on the solder side of the board, so I am looking for a place to start. I have read on forums regarding similar issues that this is typically due to bad caps or resistors. Can anyone tell me a good starting point? Thanks guys.
I have a Mortal Kombat 2 that was working perfectly. I turned it on today and made it through approximately 2 minutes of gameplay before the sound abruptly ceased. My control panel was not latched so I pulled it up to check if the LED on the sound board was still on (which is view-able from that angle and it was still on). I immediately smelled electronic burn. I put a test PCB in the cabinet and everything worked fine. This narrows the problem to the sound board, which has a residual electronic burn smell still coming from it. There are no traces of burn on the solder side of the board, so I am looking for a place to start. I have read on forums regarding similar issues that this is typically due to bad caps or resistors. Can anyone tell me a good starting point? Thanks guys.

