ANSWERED iPad 9 (A2602) - No Power

[fhulgzz]

History:
Bigla nalang daw namatay habang ginagamit

Problem:
No power, No display

Test:
- Nag chacharge upto 0.55A consumption but walang display
- 3.8-4v sa battery terminal pag sinalpak ang charger
- 1.3v sa power switch
- connect to dc bench, pag press ng power meron lang 0.03A steady
- walang short caps so far

Mahirap itrace ibang lines dahil walang boardview or schematics sa borneo. Meron sa XZZ pero hindi masyadong detailed.
Ano kaya possible na may tama nito mga boss?

UPDATE:

Fixed na po reball CPU lang.

 

[Doc Tech]

check mo sir light ic diode mode ka. Pag goods naman posible need reball cpu since low current sya

 

[intoy]

nadedetect ba ng PC?

 

[fhulgzz]

nadedetect ba ng PC?

hindi na dedetect boss.

 

[Zilpiks]

idol ilang volts gmit mo sa dc bench at amps

 

[Zilpiks]

kung hndi n detect ng pc posible cpu problem yan

 

[fhulgzz]

idol ilang volts gmit mo sa dc bench at amps

4.2v set to 5amps

 

[Zilpiks]

4.2v set to 5amps

check mna nand voltages pa present pdin cpu reball na

 

[fhulgzz]

check mna nand voltages pa present pdin cpu reball na

done reball CPU. Thanks sa assists boss.

 

[Zilpiks]

done reball CPU. Thanks sa assists boss.
View attachment 36748 View attachment 36747

nice dol