Asus gl553vd shutting down after 5-20 seconds

[casti3l]

Hello, i recive an Gl553vd, in a bad condition the motherboard seems to be ok( no damage)
Laptop is turning on i can enter in bios and after a few seconds it shutdown, i can turn on again and same shutdown (strange is that the battery led is orange like is charging the battery but battery is not connected)
After 3,4 times is not turning on, and the battery led is off
I measure after first mossfet i have only 1V.
I replace the first mossfet same thing.

[digitalpc]

Re: Asus gl553vd shutting down after 5-20 seconds

Do you try different charger and without battery

[casti3l]

Re: Asus gl553vd shutting down after 5-20 seconds

yes, is not a charger issue

[ktmmotocross]

Re: Asus gl553vd shutting down after 5-20 seconds

most likelz its KBC failure, did it gethot?

[casti3l]

Re: Asus gl553vd shutting down after 5-20 seconds

No

[casti3l]

Re: Asus gl553vd shutting down after 5-20 seconds

After shutting down, i have only 1v after first mossfet, i need to disconnect the charger to power on

[casti3l]

Re: Asus gl553vd shutting down after 5-20 seconds

At battery port on + i have 3, 4, 1 ,8v oscilating

[digitalpc]

Re: Asus gl553vd shutting down after 5-20 seconds

check chip bq power menagment

[casti3l]

Re: Asus gl553vd shutting down after 5-20 seconds

I fixit, the problem was second mossfet, wass half broken, i replace it and now is working

[frica]

Re: Asus gl553vd shutting down after 5-20 seconds

+1

[mcthr]

Re: Asus gl553vd shutting down after 5-20 seconds

what part of mosfet you change i mean what section of mosfer

[questore]

Re: Asus gl553vd shutting down after 5-20 seconds

I have the same problem, which of the 3 mosfet was changed?

[jasko_jacker]

Re: Asus gl553vd shutting down after 5-20 seconds

You can replace the damaged one (it is usually shorted) but it is important that it has the same or better characteristics