I have a problem with an HP laptop model 250 G5, mainboard LA-C701P. The integrated PU2 is ok, being replaced, but the problem is with the 3.3v LDO voltage, the 5.5V LDO being ok. On pin 15, instead of 3.3V, I have 3.16V and a consumption of 150m, the integrated only supports 100mA, it gets very hot. I injected 3.3V on pin 15 and the consumption remained at 150 mA and there is nothing hot under the thermal chamber. I disconnected the resistance towards pin 125 from the integrated UK1 and the consumption dropped to 0, and I assumed that the consumption is from the integrated. I replaced it with another one from another HP board, but the consumption returned to 150mA.https://i.imgur.com/WssMN5a.jpeg. https://i.imgur.com/oM71HnL.jpeg
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Maybe the PCH / EC rom @ EC2 is corrupted? Can you confirm there is this component onboard your logic board?
Do you have a good image of this flash chip? Have one in my database I can post if needed.
EC2 = W25Q64FVSSIQ (SO8 = SOIC 8 pin @ 150 mil width).
In my schematic, LDO3 rail (pin 15) is marked as 'Typ: 175mA'
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