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Donkey Kong Sound Problem - Death Sound Taking Over - Can't find 4 Board Schematics
Hello KLOV:
My Donkey Kong Cocktail table with a 4-Board Stack recently developed an annoying sound problem.
Basically when the game starts, everything seems normal but then the music that plays before the stage sounds "off" and a bit crunchy. The game sounds seem normal except when the player dies, there's no death music. Once I beat the first stage, then it seems the entire sound logic comes apart at the seams. The death sound effect now seems to play instead of every other sound effect and music cue. The gameplay and graphics seem fine, it's just the sound is all screwy.
Here's Part 1 of a video that shows the problem. Things get really weird after I reach Pauline in the first stage.
https://www.youtube.com/watch?v=Pt1eG9ca91M
I tried capping my monitor's sound amp as well as re-seating the roms and other IC's on the sound board, but no effect. It should also be mentioned that while what I've described previously is what most commonly happens, sometimes other audio anomalies come and go too. I have a feeling this is an issue with either the TTL components or caps on the board. It seems as if there's like a stuck gate open that is triggering the sound effects at the wrong times. The problem is that I can't find any schematics for the 4 board version of Donkey Kong so I'm not sure where to start. All the documentation I can find just specifies what roms the sound effects are stored on, not the logic as to how to trigger them. I found a thread somewhere that detailed how to jump wires to trigger sound for the 2-Board version, but not the 4-Board version.
Can anyone link me to a schematic of the Sound board for the 4 Board Donkey Kong Stack? I have TGK3-007 SOU
It should also be mentioned that this is actually not the first time this has happened with this machine. It happened just short of a year ago and all I did was take the Sound board out to see if there was anything visibly wrong, then reassembled everything and it went away and hadn't re-appeared until a few days ago. Now this problem seems here to stay.
Please respond with any help or advice you may have and have a good day.
Hello KLOV:
My Donkey Kong Cocktail table with a 4-Board Stack recently developed an annoying sound problem.
Basically when the game starts, everything seems normal but then the music that plays before the stage sounds "off" and a bit crunchy. The game sounds seem normal except when the player dies, there's no death music. Once I beat the first stage, then it seems the entire sound logic comes apart at the seams. The death sound effect now seems to play instead of every other sound effect and music cue. The gameplay and graphics seem fine, it's just the sound is all screwy.
Here's Part 1 of a video that shows the problem. Things get really weird after I reach Pauline in the first stage.
https://www.youtube.com/watch?v=Pt1eG9ca91M
I tried capping my monitor's sound amp as well as re-seating the roms and other IC's on the sound board, but no effect. It should also be mentioned that while what I've described previously is what most commonly happens, sometimes other audio anomalies come and go too. I have a feeling this is an issue with either the TTL components or caps on the board. It seems as if there's like a stuck gate open that is triggering the sound effects at the wrong times. The problem is that I can't find any schematics for the 4 board version of Donkey Kong so I'm not sure where to start. All the documentation I can find just specifies what roms the sound effects are stored on, not the logic as to how to trigger them. I found a thread somewhere that detailed how to jump wires to trigger sound for the 2-Board version, but not the 4-Board version.
Can anyone link me to a schematic of the Sound board for the 4 Board Donkey Kong Stack? I have TGK3-007 SOU
It should also be mentioned that this is actually not the first time this has happened with this machine. It happened just short of a year ago and all I did was take the Sound board out to see if there was anything visibly wrong, then reassembled everything and it went away and hadn't re-appeared until a few days ago. Now this problem seems here to stay.
Please respond with any help or advice you may have and have a good day.