kodox
Badcaps Veteran
Last Activity: 12-19-2024, 12:16 AM
Joined: 07-12-2017
Location: West Java
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thank's for helping, but the problem still exist. i think the SOC gone bad... -
Thank youLeave a comment:
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Someone please had a look to this bios dump, it's not detecting a drive attached to M.2 slot or sata port and confirmed that all the drive i tried is working on other unit.
i've try bios from post #8 but the result still the same, tried also reflowing cpu & M.2 slot without any changes. just to convince myself the fault not in bios section
IdeaPad 3 14IGL05
SN: PF32K3C2...Leave a comment:
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Thank's manLeave a comment:
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i think it's an ec bios you gave sir, motherboard behavior changed after flashed to a fresh chip, 80% power rail present except VCORE & VCCGT. tried flashing main bios (again) nothing changed. i think PCH is broken, well that's for another thread to tell about.
anyway, file you gave it is working. thank's, you've done amazing work 🍺...Leave a comment:
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thank's i'll try it (finger crossed)...Leave a comment:
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i use RT809F with software version 20240116, i said tried to erase just to make my self clear that the chip is broken or somehow broken that even trying to erase will result same error. i do have another MX25L8006E chip and worked fine using same programmer for the last two years & that software version almost a year and i always desolder the chip and never used a clip to program a bios chip or other rom chip from the begining i purchased RT809F programmer.
the link you mentioned to try the bios file on post #3, i already did and even trying for yoga S940-IWL model, i flashed...Leave a comment:
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thank's for the info but, i tried almost all the bios image in this forum and all bios image is for U2501 (main bios) based on boardview & schematic i found here [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/109020-lenovo-yoga-s940-14iil-schematic-needed[/url], i flashed & re-flashed the bios i've found before realizing that the EC has it's own chip for it's firmware and all the bios flashed had a same result as the original bios.
or maybe main bios also...Leave a comment:
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sorry, i thought EC bios not contain S/N, but here it is: R90W8XTS
fortunately U2502 is defective and a can't read the content out of it, it's detected on programmer as MX25L8006E but error "no chip is detected" when try to read or erase it...Leave a comment:
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Need EC BIOS Lenovo IdeaPad S940-14IIL Model Name 81R1
yes, it's an IdeaPad not Yoga
need EC bios that on U2502, it's 8Mbit IC from MXIC with marking MX25L8006E
board number:
LS40IC MB
18777-1
448.0HB02.0011 -
thank's allLeave a comment:
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Thank's man 😍...Leave a comment:
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thank's for schematic, but i can't find the boardviewLeave a comment:
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Thank's...Leave a comment:
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Thank'sLeave a comment:
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Thank you so muchLeave a comment:
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since i don't have DSO yet, i think i just gave up on this & consider as APU fault. but thank's anywayLeave a comment:
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Thank's broLeave a comment:
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yes, pin 108 on the ram slot is the only pin with RST naming and measured 0V...Leave a comment:
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i often use hot air, set temp to 400 and wind speed at 3.3 (with maximum scale is 8) and i use normal solder wire (0.5 or 0.6mm) which i formed into a ring to around the standoff and a bit of good flux
this is how i do:
- i isolate the flow of hot air using alumunimum tape to prevent other component around standoff to get direct contact with hot air
- apply flux to the board
- place the standoff
- place solder wire around the standoff as close as possible to standoff, you don't want to get melting solder wire flying away to other component nearby
- when...Leave a comment:
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