My eagle 320 keeps cuttin in and out. Checked all connections. As a matter of fact I redid all connections. Happens at all speeds including stationary. I don't feel that vibration is a factor. It will just go blank with out a reason and then come back on 80% of the time when you just press the power button again. Other times ya gotta wait a few minutes for the power button to be effective. I'm about ready to introduce it to the trash can. LOL! THANX!