Switch does not start, 0.9v missing

I have an NS that does not start and does not recognize RCM in tegra, it has no short, voltages of 3.3v on pins 5 and 6 present, voltage of 4.2v on the battery connector present, voltage of 1.8v and 4v on the max77621A present, but the output in one of them of 0.9v no, would he be responsible?

I managed to enter hekate, removing the EMMC, activated autorcm and managed to enter hekate with emmc connected, but when I try to enter the system the screen goes black, it is probably corrupted to nand