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Model:
Nokia 6 TA-1021
Problem:
Dead / No Power
Dinala ang unit no power, wala din power consumption sa product schematic.
Baklas unit, voltage check sa VBUS_USB may present na 5.2v hanggang sa main board so okay ang charging system.
Voltage check sa VBATT 0v so may idea na tayo na may...
History
Bigla na lang daw namatay ang unit
Diagnosing
Tinester ko muna ,ayun full shorted
Saksak sa power supply then kapa mode at dun natin nakita kung san banda ang nainit.
Next pausokan ng rosin kung san banda nainit at natumbok natin kung ano ang salarin
"power amplifier IC need replace...
Unit Model:
Huawei p20 / eml-l29
Issue:
full shorted / red light only pag nakaplug si charger
Action Taken:
hanapin ang shorted na piyesa at bunutin sa case nato no need palitan
Procedure:
dito sa unit na natanggap ko visible kung san nangagaling ang short kasi may sunog ang piyesa...
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