Primo dead no power

My Primo is not powering anymore. Took it apart there is no power on the Tinker board, was looking for a fuse but nothing. The main black board leds light up when I unplug the Tinker board

I bought the unit used, it’s a 2020. don’t have any warra tee or invoice information.

Can I just buy another Tinker board and plug it in?

please help!