Recent content by kjchatman

i'm rather new to repairing non-apple motherboards. this boards has a problem with +3valp. I was getting a low resistance to ground on the rail and i injected 1v. the pch got warm so removed it. the short seemed to be gone but when it comes back when the charger is connected. i'm getting 5v...

i think that this board has an internal short. using the thermal cam, It get visibly warmest around r5600 when i inject voltage on ppbus. i've removed all components from that area and it still does the same. I dont see a burn though

i have another board that is the same model and it has 1.5 ohm resistance on ppbus.

1.35v draws 0.041amps

it's only drawinng .056 amps

190 ohms on a working board. i'll inject 1v and hope for the best

would that rail short keep the board from powering up?

this board is charging the battery because it ramps up to 1.8 amps on the meter. it will go into dfu and it will go through a revive but it never powers up at all. pm_slp_sus_l is 3v . pm_slp_s5_l is 0v. is this a chipset issue?

it's able to charge the new battery and it booted and worked fine but now it charges but it won't powe up anymore. I was able to use the apple configurator and that still didn't bring it back to life. ppbus is 13v and slp_sus_l is 3.3v but slp_sus_s5 is 0v

i'm confused about this board. the battery doesn't charge and the fan ramps to full speed everytime. only one usb-c port works everytime and sometimes the other does. the board appears very clean with no signs of corrosion. Can this board operate without a working battery?

this 820-2915 board works and then sometimes the fan will ramp up and it gets laggy. sometimes it passes the diagnostics and sometimes the tm0p sensor error.

i have another one of these boards. the cpu vcore is missing. Imvp_vr_on is 3.3v. the fans spin then stop. pm_slp_s4 remains at 3.3v after the fans stop.

i figured it out. Had to learn how to properly clear the ME

when i add the clean ME region then the hdd won't detect in the bios. It detects with the old dump. Is there a way to repair the ME without using flash image tool?

One of the boards has an intel ME issue. It takes about ten seconds to post on a cold boot. I tried to clean the ME section of the dump and the hard drive doesn't detect with a cleared ME. this board has intel boot guard and i toggled with the setting but still no luck