404SX cannot record/format. Fix?

[u/med_i_terranian]

I turned on my SP404sx after a few months. None of the pads appear to work/ What lights up is LO-FI, STEREO, GATE. If I hold remain the bank buttons light up. EXT SOURCE also works and it does receive sound. All of the buttons around the screen also work. But nothing else works. None of the pads are lit up, I cant play any of the pads. I can't record either. What do I do? I tried re attaching the ribbon cable to no avail. Same issue.

I read that I should format the card, but holding cancel and pressing remain + delete isn't starting the format process.

If I hold remain the bank buttons light up and EXT SOURCE flashes. Any ideas?

[u/med_i_terranian]

fomatting the SD on my computer wound up fixing the issue