Board: dag3himb8c0
Got this board in this condition, one BIOS chip leg broken. I accidentally lost resistor in red circle. No schematic or BV available......
hopkok
Senior Member
Last Activity: Today, 10:37 AM
Joined: 10-30-2014
Location: Trencin
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Hi guys, anyone can help me with resistor value?
Board: dag3himb8c0
Got this board in this condition, one BIOS chip leg broken. I accidentally lost resistor in red circle. No schematic or BV available...... -
I know it is required, but label with this informations is ripped of laptop. Will ask customer about it, thanks mate.Leave a comment:
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My Dump, HP Envy 17, unfortunately whole black sticker under battery is ripper off......Leave a comment:
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Original post, have the same motherboard and would like to input DMI into my BIOS, but not sure about DMI offset. Foud just win key offset. If you like I can upload here my file.Last edited by hopkok; 07-09-2025, 05:05 AM.Leave a comment:
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Master, anyone can help me with DMI offset for this dump? ThanksLeave a comment:
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original file is working with display, just not seeing NvME drives...
EDIT: I cleaned BIOS once again, and getting same Amprere reading as your bioses, you are right, there is another hardware failure...thank for helpLast edited by hopkok; 07-08-2025, 08:12 AM.Leave a comment:
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Not working bro, no display...can you try to clean my original file? I did this extract from Acer website, with same result...Leave a comment:
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Hi master, I am here with same problem, as many of us.
Another service replaced PCH and probably reflashed BIOS as well (soldering stains on BIOS chip) and now NVMe not visible.
My unit is:
AN515-57-57EB,
Model N20C1,
SNID: 2111804534
S/N: NHQELEC0032111CD1D3400
Motherboard model: GH51G LA-L181P Rev 1C
SRKMA PCH
Intel Core i5-11400H (2,70-4,50GHz) (BNCH-16099b)- 15,6" FHD 1920x1080px Matný IPS 144Hz LED
- 8GB DDR4 3200MHz
- M.2 PCIe SSD 512GB
- nVidia GeForce RTX 3050 4GB GDDR6
I tried to clean ME region, and now have no display...Last edited by hopkok; 07-08-2025, 03:33 AM.Leave a comment:
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Hopefully, finished as well as my MAC ;-)Leave a comment:
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UPDATE, SOLVED with replacing UF400 (shorted), UF500 (red somewhere is good to replace both PD controllres), UF750 (visual damege on corner) and finally started working after UF260 replacement (probably corupted firmware). Mon2, thanks for help, really, really appreciated it.Leave a comment:
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SOLVED by ME clean, thanks for helpLeave a comment:
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Hi mon2,
both SPI have voltages,
UF260 - 3,3V
U1970 = 1,8V
that is O,K
I reballed both PD controllers to be sure, tried both controllers from working board, still stuck at 5V and power cycle...
Now waiting for USB-C tester.
Can this be caused by UF260 firmware? Is a good idea replace UF260 from working board for test?
Thanks...Leave a comment:
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Hi guys, I finally replaced PCH, laptop starts working, but can not see any NVMe drive. I did not clean ME region yet, I used PCH from Acer board with same marking, do I need to clean as well? Start is normal, no extended waiting for boot.
First to clean ME region?Last edited by hopkok; 07-03-2025, 12:27 AM.Leave a comment:
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NO DFU attempt yet. I ordered USB-C port tester and new stencil for PD controllers, will reball both PD controllers and test, data are the most important. Thanks for help, will post my update later on.Leave a comment:
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