This 820-01700 board arrived stuck at 5V USB-C. I found a short on the SSD0 NAND chips: it shows 3Ω to ground on L9530 (P1V8_SSD0) and 2Ω on L9580/1 (P2V5_SSD0). When I temporarily remove L9530 and L9580/1, I get 20V on USB-C (0.03A) and PPBUS is 12.6V. But no chime or startup.
Before I transplant the 4 NANDs from a donor board, I’d like to make sure that the rest of the board is functional. With the SSD power rails deactivated, I would expect this machine to chime, then flash the question mark folder. Am I wrong?
Before I transplant the 4 NANDs from a donor board, I’d like to make sure that the rest of the board is functional. With the SSD power rails deactivated, I would expect this machine to chime, then flash the question mark folder. Am I wrong?