I have a few of those chips in stock.
Doug
synthparts.com
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--- In xpantastic@..., Ed Koznofski <joigaloid9@...> wrote:
Sorry for being so late.? I had the same issue with my Matrix-12.? In the end, I had to replace one of the CEM chips.
In the M-12 they are socketed, so it was not too difficult to troubleshoot by swapping the chips between the bad voice and known working voices.
The bad news is the the CEM chips are hard to find, but they do turn up from time to time.