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Title: Neo Geo AES sound issue Post by: ArtificialEnemy on October 03, 2013, 03:51:25 AM Hi recently bought a NEO GEO AES but it has a sound issue. BGM and sound effects work perfectly. But whenever voice is played I hear popping and cracking and the voice is inaudible. This happens on all games i have tried (6 in total). I have taken the cover off of the Neo Geo AES and looked at the main board but cannot see anything visually wrong. What are my possible next steps. I would even be fine sending it to someone for repair if anybody knows of a repairman.
Title: Re: Neo Geo AES sound issue Post by: channelmaniac on October 03, 2013, 01:55:22 PM FM sounds are working but sound samples are not?
Check the traces between the YM2610 and the slots. You seem to have a problem between the sound ROM(s) on the cart and the YM2610, or a bad YM2610. Title: Re: Neo Geo AES sound issue Post by: ArtificialEnemy on October 03, 2013, 02:09:52 PM Not sure about the samples vs fm sounds but during league bowling when the character talks and says oh my gosh all I hear is popping cracking noises. I hear the ball sfx and bgm. I will try and work on the board in the next few days. If I have a bad trace I might be able to repair it but if the chip is bad I'm not sure I will be able to fix that. I will let you know what I find. Thanks for the help.
Title: Re: Neo Geo AES sound issue Post by: rickhunter on October 03, 2013, 02:22:25 PM fm sounds are typicaly melodies and "synthesizer" type sounds. Samples are recordings, like voices and the ball hitting the pins.
Title: Re: Neo Geo AES sound issue Post by: ArtificialEnemy on October 03, 2013, 02:32:02 PM So I actually hear the ball hitting the pins too. But I will check the traces tonight. And would I check the slot connector to the trace nearest to the ym chip. Not having the board in front of me I can't remember where the traces start from the cartridge slot. Are the traces underneath the cartridge slot or next to the slot.
Title: Re: Neo Geo AES sound issue Post by: rickhunter on October 03, 2013, 03:43:13 PM In the earlier games like those, the ball hitting the pins was synthesized and not an actual recording. Voices, can be synthesized, but they sound weird. I agree with channelmaniac's theory that there's something wrong with the DAC circuitry or path.
Title: Re: Neo Geo AES sound issue Post by: ArtificialEnemy on October 04, 2013, 01:21:15 AM Ok so I tried to test the traces but I don't really know what I'm doing. Anybody know of somebody that fixes Neo Geo Aes systems. I'm willing to send it in for repair. I don't want to mess the board up and kill my neo geo.
Title: Re: Neo Geo AES sound issue Post by: channelmaniac on October 04, 2013, 01:27:50 AM I can, but I'm backed up on work and have a waiting list that is a few months deep.
Raymond Title: Re: Neo Geo AES sound issue Post by: ArtificialEnemy on October 04, 2013, 01:37:41 AM Well could I get put on that waiting list. I would appreciate it very much.
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