k_konstantin
New member
MacBook Pro 13" A2159
820-01598
It just died quietly, there are no traces of flooding. When charging was connected, it made a sound of connecting the charger. If you press the on/off button for a long time, and then on, then the cooler started spinning for a second and that's it
Consumption with a connected battery is slightly more than 2A
Consumption with disconnected battery is between 150mA and 300mA
EDP_AUXCH_N and EDP_AUX_P resistance kOhms
There is no picture on the external display
Logged into DFU and using Apple Configurator 2 restored T2
The result did not work, I disassembled the laptop
The U8400 was warming up, it was removed, after that an understated resistance was detected by PP5V_G3S, and that's where it started
PP5V_G3S ground resistance at the time of detection is 120 ohms, nevertheless 5v is present and nothing but the PROCESSOR is heated (approximately 40 degrees)
The next day, the resistance of PP5V_G3S to the ground was 21 ohm
All capacitors were removed (according to BoardView), which according to PP5V_G3S were on the ground - the resistance remained 21 ohm
Removed all resistors, which goes PP5V_G3S also on BoardView
R7100 removed, PP5V_COREVR_VCC - kilooms, PP5V_G3S_CPUREG_MISC - 21 ohm
R7215 removed, PP5V_MAIN_VCORE1 - kilooms
PP5V_G3S-ALSCAM - 21 ohm
Removed U3200, U3100, U7650 - resistance has not increased, still 21 ohm
A voltage of 1 volt was applied to PP5V_G3S, consumption was 100mA, increased to 2.5 volts, consumption began to grow to 400mA, nothing was heated, 3 volts, consumption 700mA, Q7660 began to warm, was removed, nothing changed, L7670 was removed, P5VG3S_VSW - kOhm
But after connecting the LBP, the resistance of PP5V_G3S jumps to the ground between 180-230 ohm
Subsequent connection of the LBP to PP5V_G3S does not give results, at 3-4 volts, consumption of 10mA
I don't know which way to dig anymore and what kind of floating resistance is this
I would be very grateful for any help
820-01598
It just died quietly, there are no traces of flooding. When charging was connected, it made a sound of connecting the charger. If you press the on/off button for a long time, and then on, then the cooler started spinning for a second and that's it
Consumption with a connected battery is slightly more than 2A
Consumption with disconnected battery is between 150mA and 300mA
EDP_AUXCH_N and EDP_AUX_P resistance kOhms
There is no picture on the external display
Logged into DFU and using Apple Configurator 2 restored T2
The result did not work, I disassembled the laptop
The U8400 was warming up, it was removed, after that an understated resistance was detected by PP5V_G3S, and that's where it started
PP5V_G3S ground resistance at the time of detection is 120 ohms, nevertheless 5v is present and nothing but the PROCESSOR is heated (approximately 40 degrees)
The next day, the resistance of PP5V_G3S to the ground was 21 ohm
All capacitors were removed (according to BoardView), which according to PP5V_G3S were on the ground - the resistance remained 21 ohm
Removed all resistors, which goes PP5V_G3S also on BoardView
R7100 removed, PP5V_COREVR_VCC - kilooms, PP5V_G3S_CPUREG_MISC - 21 ohm
R7215 removed, PP5V_MAIN_VCORE1 - kilooms
PP5V_G3S-ALSCAM - 21 ohm
Removed U3200, U3100, U7650 - resistance has not increased, still 21 ohm
A voltage of 1 volt was applied to PP5V_G3S, consumption was 100mA, increased to 2.5 volts, consumption began to grow to 400mA, nothing was heated, 3 volts, consumption 700mA, Q7660 began to warm, was removed, nothing changed, L7670 was removed, P5VG3S_VSW - kOhm
But after connecting the LBP, the resistance of PP5V_G3S jumps to the ground between 180-230 ohm
Subsequent connection of the LBP to PP5V_G3S does not give results, at 3-4 volts, consumption of 10mA
I don't know which way to dig anymore and what kind of floating resistance is this
I would be very grateful for any help
