Hello everyone,
I’m currently working on a RedmiBook XMA2101-BW (board code 67591-1-12, 2021).
The problem is that the laptop is completely dead (no power on, no reaction).
What I have checked so far:
- All main voltages (VIN, 3V/5V ALW, S5 rails) are present.
- No short circuit detected on the motherboard.
- Battery and adapter are both OK.
- Board is clean and no visible damage.
But still, the board does not turn on, no fan spin, no display, nothing.
Could anyone guide me on:
1. Which power rail or signal should I check next (e.g. SLP_S3#, SLP_S4#, PM_SLP_S0, RSMRST#)?
2. Is there any common fault on this board (XMA2101-BW / 67591 series) that causes this issue?
3. Any schematic/boardview reference that is close to this model?
I’m currently working on a RedmiBook XMA2101-BW (board code 67591-1-12, 2021).
The problem is that the laptop is completely dead (no power on, no reaction).
What I have checked so far:
- All main voltages (VIN, 3V/5V ALW, S5 rails) are present.
- No short circuit detected on the motherboard.
- Battery and adapter are both OK.
- Board is clean and no visible damage.
But still, the board does not turn on, no fan spin, no display, nothing.
Could anyone guide me on:
1. Which power rail or signal should I check next (e.g. SLP_S3#, SLP_S4#, PM_SLP_S0, RSMRST#)?
2. Is there any common fault on this board (XMA2101-BW / 67591 series) that causes this issue?
3. Any schematic/boardview reference that is close to this model?
