hi there,
i have an hp spectre x360 laptop which is dead, nothing happen if you plug the charger, no light no nothing.
laptop is not liquid damage.
i opened it up and say a cracked ceramic capacitor. it's on VIN line. I have attached picture. This capacitor wasn't shorting the line!
Bq715 is charging the battery and creating 13.5 volts for the system (why 13.5v? because i checked on a good laptop)
If i apply 11.5v on battery connector, the laptop is "seeing" the charger and it works without problems...
this cracked capacitor is not an isolated case, it's a well known issue.
according to schematics this ceramic cap is 22uF @ 25v. I replaced it with an electrolytic one 22uF@25v because i don't have a ceramic one, but without luck.
I suspect bq715 might be dead? I don't have a spare one to try... I only have bq25a but i am afraid is not compatible and may damage other things...
anyone encounter this problem?
PS: i attached schematics too. On page 28 is the main power circuit...
i have an hp spectre x360 laptop which is dead, nothing happen if you plug the charger, no light no nothing.
laptop is not liquid damage.
i opened it up and say a cracked ceramic capacitor. it's on VIN line. I have attached picture. This capacitor wasn't shorting the line!
Bq715 is charging the battery and creating 13.5 volts for the system (why 13.5v? because i checked on a good laptop)
If i apply 11.5v on battery connector, the laptop is "seeing" the charger and it works without problems...
this cracked capacitor is not an isolated case, it's a well known issue.
according to schematics this ceramic cap is 22uF @ 25v. I replaced it with an electrolytic one 22uF@25v because i don't have a ceramic one, but without luck.
I suspect bq715 might be dead? I don't have a spare one to try... I only have bq25a but i am afraid is not compatible and may damage other things...
anyone encounter this problem?
PS: i attached schematics too. On page 28 is the main power circuit...
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