- Joined
- Mar 19, 2011
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Just posting this to see if I can gather some information on an issue like this. I've got a TMNT 2 : Turtles in Time board that works....technically. There is a slight audio issue with the board. I noticed when I first loaded this up in my 4p konami cabinet that the attract audio was off. I proceeded to the test menu, turned it on, and successfully exited the test menu. I really wanted to hear that goofy song made for the attract loop for some old time sakes, but it was like tearing horribly to the point that you could not make out anything. Like it was just ripping the speaker a new one (pluged in and set to mono). It was super loud and just sounded like some horrible beast was screaming in a microphone. Anyways the funny thing, that seems to be the only audio that screws up, everything else plays fine. So I checked in the test menu on the sound bits and junk. There may be a few more than just the attract loop that tears up, but mostly everything checks out alright. So I initiated a Mask Rom check and the results where reporting one bad Mask Rom, "1D." Now from what I can gather online that is a chip or processing function to the audio output.
Right now I do not have a Probe to run tests on chips. Though I really wouldn't know where to start. I do however have the manual along with its schematics for the board.
Would anybody know where to start or how to solve an issue like this?
Right now I do not have a Probe to run tests on chips. Though I really wouldn't know where to start. I do however have the manual along with its schematics for the board.
Would anybody know where to start or how to solve an issue like this?

