Switch won't turn on

Hi all
I got a broken switch recently. No capacitor short circuits or fluid damage. Amperage is from 0.41 to 0.43. Screen and battery are working, I checked on another console. I found information on the Internet that maybe it’s RCM fault. I connected the consoles to the computer and the TegraRCMGUI program detected that the console is in RCM mode. When I tried to inject anything, for example Hekate, I noticed that the screen was backlighting, but still nothing was displayed. Did anyone have such a case or would have any idea what the fault could be?