HP 15-fa0000 (680A2AV) power led blilnking

[mel82]

Hello, everyone.

Mainboard model: DAG3 PMB180 REV:B MODEL: G3P
Victus 15-fa0000 (680A2AV)

This is my first time I tackle this kind of problem with a laptop
usually dealt with resting cmos, replace bad memory sticks or replace heat sink
or visual bad caps and resistor and fuse...screens, keyboard etc... but not this advance but I am willing to learn repair this my self....

I have replace memory stick before when it went bad HP has different light code the cap key blinks when is bad memory.

I drop this laptop not from high place, I picked it up the the system was frozen, I power it off by force(power key) and re-turn on boot it up fine than few mins later just completely die no notice, try turn it on again took couple second finally power on and ask for boot password I had set.
power off I went to work and I came home try to turn it on never again power on, now on my keyboard(this specific model) the power on is on the
the keyboard and has white led. this led blinks interval every 9 seconds.
if on battery, when i plug in the power cord connector has led too is amber color which mean is charging mode
but also blinks as the same interval as power led on the keyboard.
I did complete tear down to main-board and I uploaded 3 videos on my public google drive so any expert can see what main-board trying tell me!

https://drive.google.com/drive/folde...r3?usp=sharing


I did search the forums not many people have this specific model and few post I have found was talking about bios fail update etc...

[rddube]

Re: HP 15-fa0000 (680A2AV) power led blilnking

Did you try HP bios recovery procedure?

[mel82]

Re: HP 15-fa0000 (680A2AV) power led blilnking

Did you try HP bios recovery procedure?

Hello, thank you for the reply.
sorry for late reply been busy with work.


I prepare recovery usb with latest bios
and hit window key + b plus power button
nothing no activities from usb drive which has led on it.

i also notice the charging system works because i left
laptop plug forgot unplug and had steady amber led indicated
is charging when i got back from work the led was white
indicating fully charge.

[rddube]

Re: HP 15-fa0000 (680A2AV) power led blilnking

You can check what they say here: https://h30434.www3.hp.com/t5/Notebo...s/td-p/7484805

but I think there might be something wrong with your motherboard. If I were you, I would dissassemble it completely and to a thorough inspection of the motherboard, check for loose components, the connectors, the cpu (socket if it is not soldered), the pch, the graphics processor. The drop probably disloged something. Post some nice clear photos so that we can help you see if anything is visible.

[mel82]

Re: HP 15-fa0000 (680A2AV) power led blilnking

You can check what they say here: https://h30434.www3.hp.com/t5/Notebo...s/td-p/7484805

but I think there might be something wrong with your motherboard. If I were you, I would dissassemble it completely and to a thorough inspection of the motherboard, check for loose components, the connectors, the cpu (socket if it is not soldered), the pch, the graphics processor. The drop probably disloged something. Post some nice clear photos so that we can help you see if anything is visible.

ok, im at work. i teardown tomorrow and upload the pictures...
my mine blinks 9 second interval just keep doing that and i plug in
usb flash had led on left side the usb port i get power to usb i see light blinks almost like the power led
i plug the flash to right side of laptop i get no activity from usb flash led
thank you.

[mel82]

Re: HP 15-fa0000 (680A2AV) power led blilnking

You can check what they say here: https://h30434.www3.hp.com/t5/Notebo...s/td-p/7484805

but I think there might be something wrong with your motherboard. If I were you, I would dissassemble it completely and to a thorough inspection of the motherboard, check for loose components, the connectors, the cpu (socket if it is not soldered), the pch, the graphics processor. The drop probably disloged something. Post some nice clear photos so that we can help you see if anything is visible.

i uploaded the pictures to my drive
https://drive.google.com/drive/folde...xleP9WK7fjeUr3
i try take close pictures as i can before my camera start nagging im too close

[rddube]

Re: HP 15-fa0000 (680A2AV) power led blilnking

Very hard to see with photos. One of your videos that shows a solid white light seems to show that it is powered on, no?

[rddube]

Re: HP 15-fa0000 (680A2AV) power led blilnking

You might want to check this too: https://www.youtube.com/watch?v=Brvi4g6mzHE

[mel82]

Re: HP 15-fa0000 (680A2AV) power led blilnking

Very hard to see with photos. One of your videos that shows a solid white light seems to show that it is powered on, no?

when I unplug everything and just bare mainboard and ac connecter i plug in stay on but after few seconds goes back to every 9 second interval blinking. someone another thread suggested test SIC whenever i get my multimeter. Im just hoping is not my cpu. this laptop is gaming laptop. i got it feb this year.

I can't find any information what is the 9 second interval blinking what is trying tell me. no beep sounds no other indications . the laptop still charge battery normally so tells me there's no issue with charging...

I did slow visual inspection for burn, etc... i didn't see anything. I saw video saying any short the area would be hot or weird looking.

[rddube]

Re: HP 15-fa0000 (680A2AV) power led blilnking

In the meantime, I suggest you look at Northbridge Fix and Electronics repair school youtube videos, they are masters in their art and will guide you on how to test for a short, etc. You might even find a video that duplicates your problem. I have learnt so much from them, it is priceless. Let me know your progress.

[mcplslg123]

Re: HP 15-fa0000 (680A2AV) power led blilnking

basics not followed. start with measuring resistance to GND on all coils(all power disconnected).Then proceed to measure voltages on all coils.

[mel82]

Re: HP 15-fa0000 (680A2AV) power led blilnking

In the meantime, I suggest you look at Northbridge Fix and Electronics repair school youtube videos, they are masters in their art and will guide you on how to test for a short, etc. You might even find a video that duplicates your problem. I have learnt so much from them, it is priceless. Let me know your progress.

Hello, I have been busy with work.. Today been testing the board for continuity, and what area of the board getting power this what I have so far attached pictures.

2 of the picture Im doing continuity test one has higher reading no beep
other one has lower reading it beeps indicating is close path(good?)

than other picture circle in orange is other area i test ididn't get any beeps and high readings.

on 4th picture with red brushes and white terminal I test around here i got audible and is getting power when I plug ac according to the video i watch usually this the area check first for shorts and bad cap etc...