mon2 do you think there's a hope for it to get fixed or it's done forever?...

mon2 thanks for your reply

1) L3051 is also ok since this is the GPU power rail. Some GPUs can be as low as 0R5 ohms and still be ok. No issue here.
thanks for explanation .

2) Did this HP charger work for you on this logic board in the past?
yes of cource actually the lap was working fine 3 or 4 days ago before that happen. and it's not only 1 power adapter but i have 2 power adapter which working fine.

3) Measure the voltage to ground of ADP_PRES @ U6-A pin # 1.
3.3 V - 3.27 V

4) The schematic references a 90W unit.
...

hello mon2 thanks for your reply

i tried to upload the file there but says i'm not allowed to upload F2B files anyway the file name is INVENTEC_CLASH_6050A2398701-MB-A02_-_boardview.F2B

actually L3 is 12.03 ohm resistance
but L3051 is the lowest one with 9 ohm resistance

so what would be the next step.

awaiting for your help...

mon2 thanks for your reply

if you like i can send you the motherboard BoardViewe file , it shows all the component numbers and places. if it will help you



https://ibb.co/gbV64v0



https://ibb.co/jkgQJ5LC...

mon2 thanks for your reply

1)Is the power adapter from HP or another brand?
it's original HP adapter

https://ibb.co/kgpBdMYs



2) What are the voltages to ground for:

+V3AL : 3.35 V
+V5AL : 5.41 V


3) For the inductor measurements - post their locations from the schematics. Unable to zoom in on their values in the posted pics.
i post links where you can open and zoom the pictures
the link for the first picture
https://ibb.co/fd4dP8gD


the link for the second pict...

mon2 thanks for you help

1)Confirm again the voltage to ground of your RTC BIOS battery
3.19 V

2) measure the resistance to ground of each inductor on the board
12.03 ohm, 12.0 ohm, 12.03 ohm, 25.03 ohm , 88 kohm



620 ohm, 105 ohm, 63.55 ohm, 9 ohm , 37.5 ohm


3) A low voltage power rail will be with a low resistance, by design. Post all details of any suspects. When you search for 'VBATR' in the schematics, you will see that this high voltage will mate with the high side of a mosfet. That is, there will be a high...

first of all I would like to thank you very much for helping me. I really appreciate it

1) Measure the resistance to ground of +VBATR.
it's not shorted measurements are in Mega Ohm

2) Confirm that you are using a 90W or higher rated power adapter for this unit.
unfortunately i have only two original adapter of the laptop which are 65W and I'll use them to double check measurements.. till i can get 90W power adapter

3) Source (1-2-3) : 19.55 v
gate (4) : 25.49 v
Drain (5-6-7-8) : 19.55 v

awaiting for your instructions ...

https://youtu.be/0MkBwakDwlk


i've included link for video showing the issue
the laptop doesn't start and only numlock light once and off or sometimes it stayed lighting for two second and off. there's no response from the laptop
it started two days ago the lap work fine then restart from it's own few times
then when i try to start it show the logo screen then restart and now won't start and doing that symptoms

what i've tried.
changes thermal paste, Bios battery, Ram , even the processor , power Adapter

so what could...