Best way to unsolder wson Macromix chip from HP 820 G3

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • m2farid
    Member
    • Dec 2021
    • 32
    • France
    #1

    Best way to unsolder wson Macromix chip from HP 820 G3

    Hi all,

    I have trouble to unsolder macromix wson chip from hp 820 g3 and i have already damaged 2 bios cheap and i can`t still not succeed to unsolder them. My questions are:

    1. what is the best practice to unsolder these macromix wson chips?

    2. Is there a way to solder wire to the gold pad around the chip to this adatapter QFN8 /WSON8/MLF8/MLP8/DFN8 DIP8?
    https://ae01.alicdn.com/kf/Sd49b4e34...20xz.jpg_.webp

    My soldering station is PROSTORMER 8582D

    My programmer is Xgecu TL866II Plus

    I have the adaptor listed before

    I have a Test Probe Pogo for wson 6x5, but i can not read chip with it and the TL866II Plus, i have always pin detect error. Do you think that i need an adaptater for this?

    Many thanks for your help.

    Farid
    Last edited by m2farid; 03-14-2023, 06:06 PM.
    Tags: None
    • dellxps15
      Badcaps Legend
      • Feb 2014
      • 1585
      • italy
      #2
      Re: Best way to unsolder wson Macromix chip from HP 820 G3

      hi what temperature and air flow and flux u use ?

      also what nozzle and what mainboard pcb type is it ?
      for most mainboard i use 387° celsius and airflow to 6 and nozzle around 10mm diameter.
      on hot air station generally there are 2 screw to set temperature. set them to reach max temperature.
      to unsolder that kind of component u have to stay here for around 120 seconds aat least when there is still lead free solder.
      for faster unsolder u can remove the nozzle and stay 1-2cm far from bios chip.

      always use flux for desolder and solder.
      once desoldered replace solder with leaded .

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13835
          • Canada
          #3
          Re: Best way to unsolder wson Macromix chip from HP 820 G3

          An underside pre-heater / infrared heater for the pcb is recommended as the logic board is very likely a 6-8 layer pcb design.

          We faced one from Asus that would not budge the bios chip with our Best 863 tool at full blast air and 550C setting.

          Since then we have purchased a Hakko heater (original) and also a complex bga rework station. The bga rework station has a large IR heater and can remove parts in under 3-4 minutes. Soon we will test to remove and replace CPU / PCH devices.

          Many low cost IR heaters with a small table for pcbs on AliExpress.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • SMDFlea
              Common SPI bios chip programming Questions and Answers
              by SMDFlea
              Common SPI bios chip programming Questions and Answers
              ----------------------------------------------------------

              Q: I have a bios request,i can`t post my backup as i can`t read from the chip.

              A: If you can`t read from it how do you expect to write to it ?.

              Q: Why is my bios chip unreadable ?.

              A: The programmer is faulty or has a worn or broken zif socket.

              The USB cable is frayed,connector pins worn or some other physical damage.

              Not enough amperage or voltage to power the programmer properly.

              Bad...
              09-02-2021, 04:40 PM
            • 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
            • Troystain
              Help EZP2023+ updated chip database for w25q256jveq?
              by Troystain
              Hello, anyone here have updated ezp2023+ chip database in .dat file format.

              I need to add w25q256jveq chip but I do not know what data should I type.

              I'm using the ezp chip dabase editor posted from here https://www.badcaps.net/forum/troubl...ro-programmers

              The currenty unit model that I am trying to detect is HP elitebook 640 g9 which is currently locked on admin bios....
              11-25-2024, 12:53 AM
            • acedogblast
              Guide to transplant MEC1503 EC chip and EEPROM reprogamming for T14s gen 2 and X13 gen 2
              by acedogblast
              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...
              11-02-2024, 05:13 PM
            • inck243
              Acer e15-e5-576g-5762 bricked. Bios chip won't interface in AsProgrammer.
              by inck243
              Thanks for any help. The board version is DAZAARMB6E0 REV: E. The bios chip is winbond 25Q64JVSIQ1736. W25Q64JV is not available in AsProgrammer -- only BV CV FV or FW_1.8c. The chip won't interface with asProgrammer and a CH341A. When I have this chip on the board, the laptop will not post but when I plug it in to power, the blue LED lights up, also the orange when the battery is connected. When I push the power on button, keyboard backlight turns on and the fan starts briefely then turns off. But I can't do anything to program this bios chip so I bought another one.

              The BIOS...
              07-25-2024, 09:17 AM
            • Loading...
            • No more items.
            Working...