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Allen & heath xone 92, vcf problem, selfoscillating

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  • Allen & heath xone 92, vcf problem, selfoscillating

    Hi, I have some trouble with a xone 92. Filter 1 self oscillating with resonance set to wild and frequency near to the max. Service manual found here
    ALLEN-HEATH XONE 92 SCH Service Manual free download, schematics, eeprom, repair info for electronics
    The mixer come with filter 1 not working, I found R71 burned but not broken and the ssm2164 fail. I replace both, now the filter work (not at all) but it self oscillating. Some ideas?

  • #2
    Found resonance pot in bad shape. Stay tuned.

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    • #3
      Originally posted by Vicus View Post
      Found resonance pot in bad shape. Stay tuned.
      What was the final verdict? The VCF on both sides of my mixer has turned into a band reject regardless of selected setting and it's going to be around $350 USD to replace the two filter boards. I haven't gotten into the mixer to see if there are a couple of components I could replace. Vicus, what was your final resolution?

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      • #4
        Yep, I did repair it replacing the quad vca that are obsolete and difficult to find. I did pay a lot for money for one and fortunately it did resolve the problem.

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