Board schematic overview request!

Question

HP ProBook 650 G8

HP ProBook 650 G8은 전문적인 업무, 교육, 일상적인 비즈니스 용도 및 원격 근무에 이상적인 비즈니스 노트북입니다. 15.6인치 디스플레이, 강력한 보안 기능, 다수의 데이터 포트, 그리고 내구성과 이동성을 고려하여 설계된 튼튼한 알루미늄 섀시를 갖추고 있습니다.

3 질문 전체 보기 | 1Part 둘러보기

Ridhwaan Wadee @ridhwaanwadee

평판: 1

게시됨: 3일 전2026년 8월 10일

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Board schematic overview request!

Yooo, so like does anyone have a schematic of this board👾. Been sitting trying to do a repair for too long as I don't know what's going on where.

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@ridhwaanwadee what model is your board and what do you think is wrong with it?

oldturkey03 의 3일 전2026년 8월 10일

So the device I'm working on for a customer is A hp probook 650 g8. Motherboad : DA0X8QMB8E0 REV E. couldn't find a schematic, but found a board which many say is similiar. So I mapped it to the board :DAX8QAMB8D0 Rev D Schematic Overview. Found here: https://www.scribd.com/document/85505996.... This led me to finding out on p84 about the circuitry. So prior to this is was blindside testing based of temps and measurements.

Ridhwaan Wadee 의 3일 전2026년 8월 10일

Now I've found out the first mosfet which which heating abnormally(z808) is the PQ8000 EMZBO8PO3V. prior to this I traced the it to the 2nd mosfet after removing the first mosfet. Hence resulted in this one heating up. So I changed out that mosfet. During testing post part replacement. I found that I'm now finally not collapsing under low power injectio (0.9v) but rather now I'm making it to 2.7V @ I think it was like 2a. Then I found a short to ground from the 2nd mosfet(PQ8010) dual mosfet,from source(pin1-3) of 0.6 ohms. So now I gotta figure out tommorow whether it's the Charing ic that's fused internally, or the main input decoupling capacitors

Ridhwaan Wadee 의 3일 전2026년 8월 10일

@ridhwaanwadee great. Glad you found what you were looking for and are on the way to getting it repaired.

oldturkey03 의 3일 전2026년 8월 10일

댓글 달기

@ridhwaanwadee what model is your board and what do you think is wrong with it? — oldturkey03
So the device I'm working on for a customer is A hp probook 650 g8. Motherboad : DA0X8QMB8E0 REV E. couldn't find a schematic, but found a board which many say is similiar. So I mapped it to the board :DAX8QAMB8D0 Rev D Schematic Overview. Found here: https://www.scribd.com/document/85505996.... This led me to finding out on p84 about the circuitry. So prior to this is was blindside testing based of temps and measurements. — Ridhwaan Wadee
Now I've found out the first mosfet which which heating abnormally(z808) is the PQ8000 EMZBO8PO3V. prior to this I traced the it to the 2nd mosfet after removing the first mosfet. Hence resulted in this one heating up. So I changed out that mosfet. During testing post part replacement. I found that I'm now finally not collapsing under low power injectio (0.9v) but rather now I'm making it to 2.7V @ I think it was like 2a. Then I found a short to ground from the 2nd mosfet(PQ8010) dual mosfet,from source(pin1-3) of 0.6 ohms. So now I gotta figure out tommorow whether it's the Charing ic that's fused internally, or the main input decoupling capacitors — Ridhwaan Wadee
@ridhwaanwadee great. Glad you found what you were looking for and are on the way to getting it repaired. — oldturkey03

HP ProBook 650 G8

Board schematic overview request!

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