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Phil Allison
 
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"GaryMedia"

I have an Alesis Studio 32 mixer that makes a "seashore" noise in the right
outputs of both subgroups and in the main output. The source of the noise
in channel-11, and it's there regardless of the position of the mute and
pan controls for that channel.

To further describe the "seashore" noise, its a hissy, static-y (like AM
radios during a thunderstorm) sound with occasional deeper rumbles.

Although the problem has also surfaced on channel-6, it's most
reproducable in channel-11. It will start a few minutes after the mixer
is turned on, then will quiet down for hours at a time before re-occuring.
No signal needs to be present on any channel for this problem to manifest.

Before I open this thing (or send it out for repair), I'd like to have
some idea of what components are the likely culprits.



** Had any spillages on it lately ??

Sometimes electro caps leak their juice and cause such noises.

Or, as others have said, bad op-amp ICs.




............. Phil