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.
crwdns2934109:0crwdne2934109:0
crwdns2936751:024crwdne2936751:0 11
crwdns2936753:07crwdne2936753:0 11
crwdns2936753:030crwdne2936753:0 11
crwdns2942667:0crwdne2942667:0 11
@ridhwaanwadee what model is your board and what do you think is wrong with it?
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0
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.
crwdns2934271:0crwdnd2934271:0 Ridhwaan Wadee crwdne2934271:0
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
crwdns2934271:0crwdnd2934271:0 Ridhwaan Wadee crwdne2934271:0
@ridhwaanwadee great. Glad you found what you were looking for and are on the way to getting it repaired.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0