Dziwne napięcie na cewce 0.72V na płycie HP DAG3BEMBCD0 REV D HP OMEN 17-AN106NW

Dobry wieczór. Będę wdzięczny za pomoc w rozszyfrowaniu dlaczego napięcie na cewce zaznaczonej na żółto wynosi 0,72V zamiast 1,8V jak podejrzewam być powinno.

Model laptopa : HP OMEN 17-AN106NW
Model płyty HP DAG3BEMBCD0 REV D

Z góry ślicznie dziękuję za pomoc

lopeter писал(а):zamiast 1,8V jak podejrzewam być powinno.

Hello!
And on what basis do you assume that the voltage on this coil should be 1.8V?

As mentioned in this topic, this coil is intended for the "NVVDD2" power rail.
The absolute maximum core voltage that the GPU chip on this board can still handle is about 1.2V. The voltage of 1.8V on this power rail will definitely "fried" the GPU chip.

Note that the GPU core voltage depends on the graphics load. In idle state, the GPU core voltage is usually around 0.7 - 0.85V. I assume that you measured the voltage of 0.72V on this coil in idle state, so this voltage seems perfectly fine to me.

Thank You so much for Your help. Maybe i missed something and i read the schematic wrong assuming that tehere is some kind of 1,8V power rail. Have a wonderful day