Problem with MS-70CDR, help needed

Hello r/zoommultistomp

Recently my MS70CDR which I acquired almost 3 years ago now has starded bugging out. It allows me to play for a decent half hour more or less, but then it shuts down and gets stuck in the opening animation. The one when it’s booting up. I have no idea why. My power supply is stable, I’ve tried multiple different cables etc. Has time come to retire it? Really all i need to replace it with atp is a tuner. But i still want to be able to fix it to be able to sell it later. Any help appreciated!!