why tracks mute automatically ?

they randomly mute by themself any time during playing any bar, the mute button on the left turns on automatically when this happens. any idea what is going on?

Lampdog wrote:My guess is one day while you were experimenting with track mutes you accidentally armed record for automations. And now those automated mutes are what you are seeing. Hit ERASE, scroll to automations, get rid of them.

And/or go to LIST EDIT and you can see every little thing in your tracks that’s there, you can delete there too

Check the manual for further details..

I have an X, no software, for that you’ll have to find where to do all this stuff.

thanks for the reply.
I am using MPK mini 3 and created 1 sequence with 2 bars, muiltple tracks, one I am playing the sequence, the "m" button at the left corner turns Red at a point of the bar so the rest of the track is muted,when it cycles back from the beginning, the "m" button turns off until it goes to the same point and turns Red again!
I have tried removing the sequence, and creating new sequences, there are always some sort of points that "m" button will turn Red and the track starts going silent. any idea?