bro, yesterday I found the NC line at the foot of the chip number 105 KBC with almost detached condition, do you think that's the cause?
path for what is called the NC?
path for what is called the NC?
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Dear Community,
I would need help for the following case:
Lenovo Legion Y530-15ICH - 81FV
BOARD#: EY515/EY517/EY519/EY520 NM-B701 REV: 1.0 2018-03-21
Problem: device went off during office work. (no hard game playings before). No LEDs, no charging, nothing. Analisys showed the IT8226 SIO 3.3v is shorted, therefore I oredered a pre-programmed one from a reputative seller electronicloop.
After replacement 3.3v got available but I still have no LEDs, no charging circuit voltage...nothing.
The EC soldering verified dozen of times -no moving or shorted... -
This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.
There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
Hello everyone,
I'm trying to flash the BIOS chip Macronix MX25L6445E from my ASUS X455LD laptop using both a CH341A and an EZP2019+ programmer, but I keep encountering issues.
Reading the chip works perfectly, and I can extract the BIOS dump without any problems.
However, erasing and writing fail every time, regardless of the software I use. (Neo, asprog, ch341, etc)
I also tried applying 3.3V to pin 3, but it still didn't work.
I attempted to unprotect the chip, but when I read it back, the registers remained unchanged.
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Recently, I have started to encounter a problem with Lenovo E15 Gen 2 models not opening. When you try to open the device, it gives a warning sound and does not display an image, when you apply light pressure on the keyboard, the image appears and works for a while, when you turn it off and on, the same thing happens again. Bios was tried, RAM slots were cleaned and soldered to the legs, the problem still persists. There seems to be a problem with the onboard processors, but since Lenovos glue the processor firmly from the sides, the paths are very damaged when removing it. Has anyone encountered... -
Good morning,
I have a problem with Lenovo T580, which after error code 0288 suggests a problem with the display. I checked the display and it works on another laptop. I replaced the display cable with a new one. I programmed another BIOS (downloaded from this forum) and I still have the problem of a dead display - there is an image via HDMI, and the system does not detect the built-in LCD at all. The problem appears to be hardware. What can I check to confirm or disprove this? I found many threads on the Internet related to this problem 0288, but without specific solutions. Please advise....
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