Just for future diagnostics, this is the LDO "linear voltage regulator" which is supposed to be warmer than surrounding chips.
This means, the 20v USB-C inputs and PD controllers are working (negotiating 20v instead of the default 5v USB) along with the entry MOSFETs carry the power to this chip.
From here, it creates 3v which provides constant power to the EC chip (other side of board).
In these situations, where board is taking the usual 20mA standby current (EC Chip being on/waiting for power button keypress) then the following may have happened:...
saiiko
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Last Activity: 05-13-2025, 05:22 AM
Joined: 05-05-2025
Location: Aichi
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Check this area specifically - may be a heat issue (4060/4070/4080) middle Atmel mosfet likely overheat.
Check resistance from 3 GPU coils to ground - do you see 3 OHMS?Leave a comment:
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Hello,
Can you post a full board photo?
Also if you thermal monitor when you connect the battery, this power splitter maybe dumping the 20v to ground as a protection mechanism. Are the CPU / GPU mosfets shorted? What [B]Ω[/B] do you get from CPU / GPU coils to ground?
I have the same board, same faultHello,
Can you post a full board photo?
Also if you thermal monitor when you connect the battery, this power splitter maybe dumping the 20v to ground as a protection mechanism. Are the CPU / GPU mosfets shorted? What [B]Ω[/B] doLeave a comment:
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