hp zbook g3 la-c381p no power

[doctormasry]

hello
laptop hp zbook g3 la0c381p no power
PR315 pin 1 and 4 there is 4 volt
when i remove pr315 pin 1 and 2 = 19 volt
but pin 3 and 4 still 4 volt

pl59 = 450 om
pl39 = 400 om
pl40 = 420 om
pl37 = 550 om
no short on there coils
i flash 2 bios ic no new
i ve 2 laptop same problem
please help
and sorry for my english

[doctormasry]

BOARD VIEW https://www.badcaps.net/forum/troubl...g3-pcb-scans-b

[doctormasry]

no idea ?

[mcplslg123]

Your description of problem is inadequate/incomplete and there is hardly any info provided. based on these data,no one can suggest anything.

Describe in detail.

[doctormasry]

Your description of problem is inadequate/incomplete and there is hardly any info provided. based on these data,no one can suggest anything.

Describe in detail.

hp la-c381p no power
when i put adaptor jack the led light ok white
when i measure on pr315 there is no 19 v just i found 4 v . its should get 19 v on pin 1-2 and get 19 v on 3-4 pin i found just 4 v
when i remove this resistor ( pr315 ) i found on resistor pin 1-2 19 v ok but pin 3-4 found 4 volt
i remove adaptor and measure all coils after resistor no short
when i connected power supply no A ( 000 A )

[mon2]

Same fault here:

https://www.badcaps.net/forum/troubl...power-no-acdrv

What is going on? Strange...

Which charger IC is onboard?

[doctormasry]

Same fault here:

https://www.badcaps.net/forum/troubl...power-no-acdrv

What is going on? Strange...

Which charger IC is onboard?

thanks mon2
i ll try your answer about asus and write for you

[mcplslg123]

Resistance to GND on pin3-4 of PR315?(while its removed)

[doctormasry]

Resistance to GND on pin3-4 of PR315?(while its removed)

when i press resistance it give me short after 10 sec give 400 om

[doctormasry]

Same fault here:

https://www.badcaps.net/forum/troubl...power-no-acdrv

What is going on? Strange...

Which charger IC is onboard?

i change charge ( BQ 24780s ) ic but same problem no new

[mon2]

Review the 2nd DCin mosfet. Remove all power. Meter in resistance mode.

Measure the resistance across this Dcin mosfet:

source(1-2-3) & drain (5-6-7-8)
source (1-2-3) & gate (4)
gate (4) & drain (5-6-7-8)


What is the resistance measurement of PR315?

With PR315 on the board, measure the resistance directly on pin # 1 to pin # 2 on the charger IC - measure at the contacts on the BQ24780S device.

Then measure the resistance to ground on pin # 2 of BQ24780S again.

Post each measurement.

[mcplslg123]

when i press resistance it give me short after 10 sec give 400 om

If the rrsistance to GND measurement is correct at 400 Ohms on pin3-4 of PR315,then your main 19V rail is shorted.

[doctormasry]

thanks mon2 and mcplslg123
solved
problem in PD5