Asus laptop EC/SIO chip replacement

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • ebugs
    New Member
    • Aug 2024
    • 1
    • Myanmar
    #1

    Asus laptop EC/SIO chip replacement

    Asus Vivobook 15 (board X513ea R2.0) gone dead when user plugged an iPhone cable into the USB-C port during boot. Now there's no LED light, no power at all. I checked all MOSFETs and capacitors, no shorts found. The board only has 3.3V and 5V present, no other voltages.

    I injected 3.3V into the EC chip power rail (ITE IT5125VG 128), and it draws 80mA, while the 3.3V LDO chip RT8249C has a max output of 100mA. I checked the boardview and found there are only two chips on this 3.3V rail, EC and Realtek audio chip. So I think EC could be the problem.

    I found the EC chip on Taobao for 40 Yuan (~$6), but there are two options: one with firmware and one empty.
    My questions are:

    1. Is it true that Asus laptop auto flash the EC firmware itself after replacing the chip?

    2. Can I use empty EC chip because I'm afraid of incompatible or wrong firmware programmed EC?
    I mean I'm going to order empty EC chip and install and let the laptop flash required firmware itself, is this correct?

    Thanks for any help.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • BMCappelletti
      Asus Chromebox CN62 - wrong chip put on BIOS reader
      by BMCappelletti
      Long story short:
      - dad converted Asus Chromebox CN62 into Windows compatible, with mrchromebox BIOS, years and years ago
      - gave the computer to his son a couple years later
      - son now decided to revert it to Chrome OS, to sell it as original (re-writing BIOS with the backup one created by his dad)
      - too lazy to remove the board from the case, thought a voltage regulator was the BIOS chip (you know... it has 8 legs)
      (seems like the story was not that short)

      He used alligator clips to read the chip. No luck reading it. Removed chip and placed on a SOC-8...
      01-08-2025, 07:27 PM
    • DynaxSC
      ASRock B650M PRO RS - BIOS CHIP 25Q256JW BLOCKED BY STATUS REGISTERS
      by DynaxSC
      Hi

      I have a very strange issue with the BIOS SPI chip of an ASRock B650M PRO RS motherboard.
      The SPI chip is an Winbond 25Q256JWEQ model (1V8).
      The motherbaord doas not POST - it lits only CPU and DRAM EZ Debug Leds, and stays that way forever.
      The Flashback function of the motherbaord is also not working, despite all instructions followed correctly - I'm 100% sure of this.

      I have then desoldered the chip, backupped the contents, and tried to earease the chip in order to program stock image, but the chip is locked by status registers SREG2 (TB) and SREG6...
      08-04-2025, 12:20 PM
    • pengamat_hebat
      Problem Flashing Macronix MX25L6445E BIOS Chip with CH341A and EZP2019+ on ASUS X455LD
      by pengamat_hebat
      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.
      ...
      03-25-2025, 04:13 AM
    • Jeroentje
      Asus X571GT repair chip replace and tips wanted
      by Jeroentje
      Hi

      I try to repair a asus Asus X571GT (DA0XKTMB8C0) no power no lights.
      I saw a burned (small hole in it) chip (JW10F) proberly a TPS22976DPUR, I removed it, now with power connected the laptop turns on and direct off again, power led and fn will light up.
      I found on a donor lenovo board a G2898KD1U (wa9y), looks the same ..
      Result is still the same, turns on and direct off again, first attempt is with backlight on all other direct attempts are only the power and fn led.

      Could it be the chip is to diffrent to make the laptop work again ?

      ...
      04-28-2024, 10:59 AM
    • mferna14
      ASUS TP412F 3.3V Regulator chip gets very hot
      by mferna14
      Hi all., I am working an ASUS TP412F​., motherboard Model TP412FAC R: 2.0. The problem I am facing is the 3.3 buck converter (L8=7J RT6256BGQUF) gets very hot when 19v is applied through DC-in jack. I don't think Schematics or Boardview is availble for this model. The chip get so hot that I can't even take the voltages of the pins. I replaced the chip but the problem is still there, new chip even gets very hot. The input on pin 5, 19v is present. So I removed the Output coil & the chip & checked the voltages on the chip pads which are as below: Please view if any volts seem to be abnormal....
      07-09-2024, 11:57 AM
    • Loading...
    • No more items.
    Working...