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Vintage Synth Repair

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Akai S900 voice issues

2012-10-28 by Quazimodo

Hi folks,

I have an Akai S900 sampler which has three dead voices (5, 6 & 8)

I managed to get the service manual downloaded and I've discovered abnornmal voltages (compared to the good voices) on a couple of pins of the BA9221 D/A convertors. All three voices seem to be identical faults.

I have Googled "S900 dead voices" but there is literally nothing out there which leads me to believe it is probably not a 'common' fault. And I have three a once...!

Just checking if I could be barking up the wrong tree...? Has anyone ever had similar problems it these Akai samplers?

Cheers,
TOM

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