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YM3012 DAC

Posted: Mon Apr 15, 2013 7:04 am
by DX21
Hello there, I need a Yamaha 3012 or B model DAC from any YM2151/YM2164 powered machine. I'm not sure if there's a difference between the regular one and the YM3012B model, but if you know that it wouldn't work, please enlighten me.

I'm willing to go up to $5 on paypal and would very much like to find a local person.

Also, would anybody know where a good place to source these chips from would be? I know arcade boards use them, some of the DX synths like the one I'm repairing, and some of the cheap keyboards like YPR-7

Thanks :)

Re: YM3012 DAC

Posted: Fri Apr 19, 2013 1:49 am
by gslug

Re: YM3012 DAC

Posted: Sun Apr 21, 2013 7:14 pm
by plus321
Sorry to jump in your thread, but do you happen to have a tx81z transformer laying around? I've got one here that is half fried and has no audio outputs. Can't seem to find an easy replacement.

Re: YM3012 DAC

Posted: Tue Mar 26, 2019 5:09 am
by westtech
I need to build a simple amplifier circuit for the ch1 and ch2 outputs, can anyone suggest something? I'll be going out through an audio summation circuit on the host device that this is feeding the audio into and that device is then pushing out a composite output with an audio signal.

I tried using a LC2274 and using one of the opamp gates in it, the audio is coming out but its way too low and I am not sure what is the best way to get some good volume out of the DAC, any help would be greatly appreciated.

Re: YM3012 DAC

Posted: Thu Dec 12, 2019 5:36 pm
by smithclarkson001
So I pulled a YM2164 (I believe 8 voice.) FM tone chip, from a yamaha DX21 that had unrepairable issues to other areas of the synth (not the voice board), as well as its YM3012 DAC chip.

Originally I had high hopes to find a project built around them, but with no luck and no EE degree, I'm at a loss (sorta.)

If anyone has use for them PM me, or any ideas at all; please comment.

Re: YM3012 DAC

Posted: Sun Dec 22, 2019 4:22 pm
by Janis 1279
some circuitry for YM3012 Dac out's ... f=9&t=6819