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Hello, any help will be apprecited!- Model: Dell G15 5511
- MB: LA-K452P
- Issue: Won't turn on at all, no leds, no keyboard light, no fan spin, nothing happens when pressing power button. NOTHING.
- Customer reported it was turned off and left plugged in during the night and thats it...
- No signs of liquid damage or burned components.
I have checked so far:
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hi i have this laptop IdeaPad 3 15ABA7 this is the boardview https://www.badcaps.net/forum/troubl...90#post3740490
nm-e531 i tried all kinds of bios editing and it doesn't work. it doesn't have schematic but it has boardview with board ID details in it.
maybe you could help me how to shift these resistors to disable its onboard ram.
this is is the presents and not presents... -
Lenovo Air 15ITL.
NM-D211
This laptop won't power on , when power supply is on it takes 0.001 , button trigger on it becomes after a couple of seconds 0.061 amp..and nothing
No heating (Of COURSE) , no short to GNd at all coils present , 3/5 valw is present , 3/5 vl present.
With the power plane , at state 4 +1.8VALW and +3ALW_PCH must be present but no one due to enable signal is missing .
when button trigger on , 3v dow to zero than 3v , the super io send BTN_OUT#_R to pch but no rsmrst ..0v.
i follow his line , no short .
...10-21-2025, 05:53 AM -
Hello everyone, I'm troubleshooting an MSI Delta 15 (MS-15CK1) motherboard, and I need help identifying the function of the two coils marked in the attached image. The laptop powers on and responds to the keyboard, but the screen does not turn on-neither the LCD nor the backlight. I've checked the main power rails, and all other coils seem to have the expected voltages:
• 0.91V for the GPU
• 1.7V for VRAM
• 3.3V and 5V rails 1.8V for the BIOS
• 0.9V for the CPU and iGPU 1.2V for the RAM
However, these two coils are not showing any voltage.... -
I have a Mb LA-A993P REV 1.0 computer, I am guiding myself with these two shared boards. ;
there are some ICs that are not the same, in this case those of the PU1501 (JD4TB) and PUH1 (NF4SA) images.
n, please identify.
330mA of consumption after 8 seconds turns off. +3VALW AND +5VALW present, EC_RSMRST# , LID_SW# , EC_ON# , ACIN# present.
SUSP# NOT PRESENT, which would be this the problem does not turn on sub-sources Any leakage?
I also notice that in the PLH2 coil that belongs to +1.05VS according to the drawings I am not sure,
...06-27-2024, 06:11 PM
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