This is a liquid damaged board
It had No backlight, charging forever and restarting when you shut down laptop from macos Apple menu.
I am leaving Backlight issue at the end.
I focused on the restart issue and fixed it by reworking theses signals: SMS_INT_L SMC_TCK SMC_TDI SMC_TDO SMC_S4_WAKE_SRC_EN (corrosion near SMC)
Now I try to fix the charging forever:
-Battery is detected, tested also known good battery.
-Percentage increasing but very slow like 25 minutes for 1%
-Estimated time untill full is always 20:00
-Q7155 has 7,43v on all its pins.
-Sensing charging resistors are good 4ohms and 21ohms
-SMC data and clk resistors R5180, R5181 mesures 2kohms and have 0,499 in diode mode both of them
-U5600 Battery monitor ic was corroded and I replaced it with no change
I really don't know what to do next for this charging issue.
It had No backlight, charging forever and restarting when you shut down laptop from macos Apple menu.
I am leaving Backlight issue at the end.
I focused on the restart issue and fixed it by reworking theses signals: SMS_INT_L SMC_TCK SMC_TDI SMC_TDO SMC_S4_WAKE_SRC_EN (corrosion near SMC)
Now I try to fix the charging forever:
-Battery is detected, tested also known good battery.
-Percentage increasing but very slow like 25 minutes for 1%
-Estimated time untill full is always 20:00
-Q7155 has 7,43v on all its pins.
-Sensing charging resistors are good 4ohms and 21ohms
-SMC data and clk resistors R5180, R5181 mesures 2kohms and have 0,499 in diode mode both of them
-U5600 Battery monitor ic was corroded and I replaced it with no change
I really don't know what to do next for this charging issue.