Korg Krome EX Failure - Help needed

Hello everyone, I got this instrument a week ago, worked with no issues during these days, yesterday It begins with this behavior; if someone can give me a hand to figure it out what could be wrong with it, or had this issue in the past I will really appreciate if you share the solution or guidance.
Thank you very much!

[@saxophonistantony8486]

Change the internal sd card

[@cancionromero4923]

Instruction Enter ( KZbin) and search video, are very good for you problem

[@robertmichalscheck3072]

Did you get problem fixed?

[@marcoantoniomontellanorami8702]

Hello! Yes, I've send the instrument back to the seller for warranty service, on the job-sheet they said there was a problem with the keyboard harness on the pcb connector, they changed the part and send the synth free of any charge, it works well so far, no issues, thanks for asking.

[@robertmichalscheck3072]

@@marcoantoniomontellanorami8702 good to hear,I just ordered that keyboard.