uncivil_enginee
n00b
- Joined
- Oct 9, 2016
- Posts
- 14
Well ive been working my way through my 4 slot getting things up and running again, and ive come up against an audio issue...
When I got the game, you had to turn up the volume all the way to hear the games, and the right speaker was disconnected. I hooked it back up, and discovered it had a nice crackle in it a certain frequencies. Unfortunately, one of those frequencies is not the sine wave in the hardware test. It sound fine.
So I recapped the board, and this fixed the audio volume problem. Now I just have the crackle left to deal with. The problem is in the right channel only. I don't know if it also is present in the head phones (my head phone/card reader board is missing). The problem appears to be independent of the carriages (it occurs in all games, in any slot).
So now Im really wishing I had a good schematic of the sound section of the board (its an MVH MV4 Board). My best guess at this point is the YM3016 may be bad. Is there anywhere I should look first?
When I got the game, you had to turn up the volume all the way to hear the games, and the right speaker was disconnected. I hooked it back up, and discovered it had a nice crackle in it a certain frequencies. Unfortunately, one of those frequencies is not the sine wave in the hardware test. It sound fine.
So I recapped the board, and this fixed the audio volume problem. Now I just have the crackle left to deal with. The problem is in the right channel only. I don't know if it also is present in the head phones (my head phone/card reader board is missing). The problem appears to be independent of the carriages (it occurs in all games, in any slot).
So now Im really wishing I had a good schematic of the sound section of the board (its an MVH MV4 Board). My best guess at this point is the YM3016 may be bad. Is there anywhere I should look first?
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