totup -- it sounds like you've assigned a macro to the 950's power button. (Like the M1-M4 buttons, the power button can be used to store a macro.) There is a typo in the 950's manual when it describes how to program macros. The instructions are correct (when sending a "power" command while creating a macro, you must use the "mute" button), but the example on the following page tells you to use the "power" button.

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review