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?
- de 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.
- de 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
- de Ridhwaan Wadee
@ridhwaanwadee great. Glad you found what you were looking for and are on the way to getting it repaired.
- de oldturkey03