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unfortunately the schematic for the one apple use is non existent. however they do list specs on their schematic which does mary up with the ones from mouser.

Hi thanks for the reply. yes you are correct regarding the resistors. i did this and could not locate the issue. however i have found a shorted U8250 on the PP3V3_G3H. Removed it and tested both incoming and outgoing on the board and short is now gone. However i do not have a spare U8250...

Just read it. Thanks for taking the time to put this up.

Hi. i have a macbook pro here that had liquid damage on the EDC180 area. checked ic and was shorted. replaced it with one from mouser and now i have 3.3v again ( with R3964 AND R3965 REMOVED) with these resistors in place the voltage is low. pulsing around 200-300ma when connected to a meter...

Hi. thanks for the info. However im not sure what you mean. what part do i heat up and to what temp? thanks

Hi. Thanks for the quick reply. I dont have a way to connect a display to this externally. i will have to purchase an adapter this week. however i did do the SMC bypass and does the exact same thing just 10 seconds later. also tried safe mode but same issue. so at a loss still unfortunately.

so have a macbook pro 13" 2009 A1298. came to me with not booting. on diagnosing found if i removed the screen the thing would boot and chime. replaced the screen with a known working one and same issue. replaced the backlight driver ic and still the same issue. Now at a loss as what could be...