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Thread: 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?

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    Found resonance pot in bad shape. Stay tuned.

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    Quote 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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    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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