My Sansa Clip keeps turning on after I turn it off.

I don’t know why, but I turned off my Clip this morning and a few minutes later I heard sound coming from my headphones, so I turned it off again. About 10 minutes later, it turned on again. So I turned it off, a few seconds later it turned on again so I turned it off and put it in lock mode. So I watched it for about 30 seconds when it turned on and the lock symbol appeared.

Does anyone know how to fix this issue?

Have you tried a reset (hold the on switch uppermost for 15-20 seconds)? If that doesn’t work, I’d try a reformat under Settings.