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PREMIUM Huawei Y7A no power... Fixed!!!

activa2r

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Oct 30, 2022
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Location
Leganes , Iloilo
From other shops na..
status bigla na lang nag no ower..
pag saksak mo charger automatic 1.4A sa schematic charger
kahit wlang battery 1.4a pa rin..

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kayasa isip ko may problema sa 5v rail from charger
salang sa thermal cam then saksak usb at ito ang lumabas..

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sakto OVP remove lang at pwede na jumper..

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akala ko tapos na test no power pa rin... :D :D :D
try saksak charger same auto 1.4a reading..
diode mode palibot ng Chrging ic shorted VPH rail..
sa taalas ng mata nakita ko bitak na pala capasitor..

IMG_1041.PNG

remove capasitor lang
at Done..

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  • 418363853_915062566819468_4890694814182117808_n.jpg
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ganito ba sya nak admin pagjump 3 lines sa ovp
YXZtKip.jpg
 
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