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i connected an screen and same result .
i have forced EDP_BKLT_EN to 5V and PPVOUT_S0_LCDBKLT up to 30-40v
no pulsing on I2C_TCON_SCL_R / SDA( stable to 3.3V)
no pulsing on I2C_DISP_SCL / SDA (stable to 1.8V)
LCD EDP connector has been changed.
i 've checked on 3 LCD A1932 -> same result.
Hdmi is working.
Here are the measurements I took on the LCD / backlight section, without LCD connected
PP5V_S0SW_LCD = 5 V
PP3V3_S0SW_LCD = 3.3 V
EDP_PANEL_PWR_BUF_EN = 3.3 V
PPVOUT_S0_LCDBKLT = 0 V...
During the removal of the logic board, I accidentally broke the Touch ID flex cable 😢
I tried to solder the flex, but it didn’t work — the lines are too small.
Do you know how to completely replace the flex (maybe a YouTube link)?
Can the Touch ID sensor itself be disassembled?
thanks
James
i check LDOS on U7700 and find small corrosion on capacitor , just clean and remove a capacitor connect to PP1V5_AON_VCORE_SPMU line , and magic board restart again.
i attach files.
Thanks a lot !
Hi ,
on a2780 -820-02652 - macbook pro m2
laptops stuck 5V-0.16A with no reboot.
my measurements :
PPBUS_AON 12V
PP3V8_AON 3.8v
PP3V8_AON_MPMU 3.8v
PP1V8_AON 1.8v
PP1V2_AON 1.3v
PP3V3_AON 1.5v not stable
PP3V2_S2 1.5v not stable
On each CD3217:
LDO 3V3 and LDO 1.5 are OK and stable when I plug...