a2378 280-02415 boardview

[MAGICLAB]

hello anyone have an a2378 820-02415 pcd boardview ?
thanks you

 

[Admin]

hello anyone have an a2378 820-02415 pcd boardview ?
thanks you

All what we have for now is a Schematics file but we will check for a boardview if it's available

iPad Pro12.9 5th A2378 A2461 A2379 A2462 820-02415 820-02156 Schematics

iPad Pro 12.9 5th A2378 A2461 A2379 A2462 820-02415 820-02156 Schematics

www.repairlap.com

 

[MAGICLAB]

ok thank you , i already see this schematics
my device works fine but have backlight issue all value look like good on j4801 and
board are prety clean
i thinks the backlight driver its self are dead but im not sure

 

[SAV]

Are those voltage available or not
PPVCC_MAIN_LCD_SW_CONN
PPVCC_MAIN_LCD_SW
GPIO_PMU_TO_LCD_PWREN_1V2
PP_LUME_OUT

 

[MAGICLAB]

the device boot normaly and i see image of the lockscreen
and touch work
PPVCC_MAIN_LCD_SW_CONN = 4v(only when display on)
PPVCC_MAIN_LCD_SW = 3.9v ( only when display on )
GPIO_PMU_TO_LCD_PWREN_1V2 = 1,25v ( only when display on )
PP_LUME_OUT = 0v (always)

PP_LUME_OUT diode mode value 0,580v

 

[Admin]

the device boot normaly and i see image of the lockscreen
and touch work
PPVCC_MAIN_LCD_SW_CONN = 4v(only when display on)
PPVCC_MAIN_LCD_SW = 3.9v ( only when display on )
GPIO_PMU_TO_LCD_PWREN_1V2 = 1,25v ( only when display on )
PP_LUME_OUT = 0v (always)

PP_LUME_OUT diode mode value 0,580v

Try to use another screen.

 

[MAGICLAB]

already tested with another new screen same problems

 

[SAV]

already tested with another new screen same problems

PP_LUME_OUT should have 12V or more than that , check if there any short circuit.

 

[MAGICLAB]

hello ,
all value are ok , no short and no overconsumption and the board
do not become abnormally hot
I ordered one backlight ic

 

[waterchill]

Still no boardview?

I have same iPad which is dead. Current draw is 0,5A@5V when battery is connected and 0,1A without battery. Didn't found a short, I can measure 3,7V and 5V around the PMIC. With thermal cam the PMIC gets slightly hot about 30°C with battery connected. Checked a lot of caps, no short. What do you think is it worth to change the PMIC or other ideas? Thanks

 

[Admin]

Still no boardview?

I have same iPad which is dead. Current draw is 0,5A@5V when battery is connected and 0,1A without battery. Didn't found a short, I can measure 3,7V and 5V around the PMIC. With thermal cam the PMIC gets slightly hot about 30°C with battery connected. Checked a lot of caps, no short. What do you think is it worth to change the PMIC or other ideas? Thanks

No boardview available for now .