01-17-2018 10:42 AM - last edited on 03-06-2024 07:42 PM by ROGBot
01-17-2018 11:44 AM
03-02-2018 02:10 PM
jdfrench3 wrote:
A component in your battery circuit on your motherboard is most likely toast. This circuit is used to charge your battery. To test this, charge your battery using an external battery charger or replace with new fully charged battery. Once a fully charged battery is installed, the laptop should boot up. This wont fix your problem but it will confirm the battery circuit has failed. I would suggest a motherboard replacement.
11-16-2018 02:05 PM
11-27-2018 01:56 PM
bindiou wrote:
hi
did you check voltage at AC_BAT_SYS (after the second entry MOSFET) ?
ihave one of the laptops i am repairing with the same power issue, 19Volts rom charger not getting throught .
i could shunt it to 19volts, but then plugging a battery woould be impossible.
i already changed the mosfets (twice), the regulator, and some capacitys.
i also have the boardview.
but still not finding why the gate signal on the mosfets stay so low.
i also saw this signal is pulsing , but i dont find why .
AC_BAT_SYS stays at 3 or 4Volts.
the regulator you asked for, is a BQ735, it is located between the CPU V-CORE coils an the battery mosfets.