PREMIUM Acer E 14 E5-476G no power shorted input capacitor from power rail

[FredzyNoy]

Brand | Model Acer Aspire E14
Board id:
DAZ8VRMB8EO
REV: E

problem : shorted cap from power rail ( input capacitor )

solution : inject 5v to determine shorted components
at primary power rail there is 19v.
at diode 19v present.
at primary mosfet drain lines 19v present
but at source lines no output..at gate also no voltage. source pins 123 are short to ground.
check input capacitor from power supply area
power supply section have coils and input caps.also have small mosfets.and output caps with voltage number printed.
we must inject 5v.

plug red and black probe wire to dc bench or power supply. set to 5v

tap black probe to ground.
tap red probe to current sense resistor with r01 printed.

this resistor located beside primary mosfet.
observe board if theres heating components.
try apply alcohol or lighter fluid to area that getting hot ( or heating )
observe who's immediately dry or getting hot.
remove faulty cap then replace.
and i found capacitor shorted ( input capacitor )

after remove check again..short is gone.replace cap same size from scrap board. ( 25v or 5 microfarad )
tagalugin ko nalang yung cap na hinugot ko sa scarp board pamalit tinest ko gamit digital multi meter set ko sa n F

at nakakuha ako ng 4.762
halos 5 microfarad daw pag ganyan sabi isa ko kakilala.
plug ulet charger at test voltage set sa dc volts
tsek voltage sa primary mosfet source pins at meron ng 19v hanggang 2nd mosfet

assemble na

 

[intoy]

edit ko ang post lagyan ko ng
Brand | Model
and board id

Acer Aspire E14
Board id:
DAZ8VRMB8EO
REV: E


NOTE: i have to remind everyone na mag start sa 1volt 1amp sa pag inject dahil lalabas na ang sirang component specially pag capcitor sa may mga thermal scanner at makakaiwas sa posibleng dagdag na trouble

 

[BAGGER]

paps ang lakas na ng 5v ahh d ko pa alam ito ahh nag inject aku 3v lang alam ko pero base sa sharing ng threads mo 5v ok lang ba ito na gmitin sa inject voltage 5v

 

[BAGGER]

edit ko ang post lagyan ko ng
Brand | Model
and board id

Acer Aspire E14
Board id:
DAZ8VRMB8EO
REV: E


NOTE: i have to remind everyone na mag start sa 1volt 1amp sa pag inject dahil lalabas na ang sirang component specially pag capcitor sa may mga thermal scanner at makakaiwas sa posibleng dagdag na trouble

so maganda boss intoy e tira ko muna sa 1v then pg ayaw up to up

 

[FredzyNoy]

paps ang lakas na ng 5v ahh d ko pa alam ito ahh nag inject aku 3v lang alam ko pero base sa sharing ng threads mo 5v ok lang ba ito na gmitin sa inject voltage 5v

sinundan ko lang din yung sa kakilala ko paps halos same kami model tanggap..yung vlogger na si teknix.. 5v at 3amps ginamit nya.
iba cap lang ang shorted sa tanggap nya