Clip Plus Turning Off constantly

[Blundetto]

I´ve been using the 3.8.1 for a while and decided to upgrade to the 3.11.2 release, which made the player to turn off and on after a few seconds of booting.
I tried doing the hard reset, letting the battery to die completely (this could only be done by entering to the sansa boot, here it turns off after trying to play music also), uninstalling rockbox and doing a manual installation of the 3.8.1 version, removing rockbox completely and putting the original sansa bin file, and even several formats to the drive. Neither of this solved this shutting off issue.
I also tried the 3.11.2 release with the latest dev build.
Thank you !
 

[saratoga]

If both Rockbox and the sandisk firmware switch off its probably broken.