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