Pin 8 on the bios is shorted to ground

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mnciks11
    Badcaps Veteran
    • Aug 2019
    • 345
    • south Africa
    #1

    Pin 8 on the bios is shorted to ground

    Fellow brothers

    Kindly assist with the Following:
    MSI Gaming Laptop
    Model number: MS-1799
    Motherboard no:MS - 16J91
    VER: 1.0

    The bios chip is shorted, i removed the bios chip from the board but short is still there, pin 8 of the bios chip which I believe it 3.3v it shorted to ground, pin 1 and pin 2 are shorted to ground as well, pin 5 and 6 as well

    I injected 3.3v on pin 8, nothing is getting hot on the board, i even limited the current to 4 Amps but still nothing is getting hot

    Again there is coil which is shorted straight to ground, I believe it 3.3v output, still when i inject 1v there nothing is getting hot yet the board is taking 4 Amps

    Im totally confused

    Can someone help me please .
    Last edited by SMDFlea; 05-21-2020, 05:10 AM.
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: Pin 8 on the bios is shorted to ground

      Check if PCH die warms up when injecting on 3.3V rail.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • whaldsz
          Badcaps Veteran
          • Apr 2013
          • 395
          • Philippines
          #3
          Re: Pin 8 on the bios is shorted to ground

          You should observe a warming up of component at least, unless the short is below 1 ohms. Also replace the wire you use for injecting 3.3v. You need a larger diameter wire or else, nothing will heat up.
          Last edited by whaldsz; 05-21-2020, 07:58 AM. Reason: correction

            Comment

            • mnciks11
              Badcaps Veteran
              • Aug 2019
              • 345
              • south Africa
              #4
              Re: Pin 8 on the bios is shorted to ground

              Originally posted by whaldsz
              You should observe a warming up of component at least, unless the short is below 1 ohms. Also replace the wire you use for injecting 3.3v. You need a larger diameter wire or else, nothing will heat up.
              highly agreed, im gonna use a larger wire, it 000, straight to ground and my wire is getting hot instead, im gonna change my wire tomorrow and update you guys

                Comment

                • mnciks11
                  Badcaps Veteran
                  • Aug 2019
                  • 345
                  • south Africa
                  #5
                  Re: Pin 8 on the bios is shorted to ground

                  Originally posted by piernov
                  Check if PCH die warms up when injecting on 3.3V rail.
                  thank you so much my brother, i did that, i even removed the heat sink and poured alcohol, no movement and nothing heating up

                    Comment

                    • whaldsz
                      Badcaps Veteran
                      • Apr 2013
                      • 395
                      • Philippines
                      #6
                      Re: Pin 8 on the bios is shorted to ground

                      Check again if your wire is heating up. Shorten your wire if possible. Inspect using microscope if you have, could be a shorted large cap or the PCH is busted. You might need to leave it for 5-15 min and get back to it to check which area is warming up.

                        Comment

                        • mcplslg123
                          Badcaps Legend
                          • Jun 2015
                          • 7262
                          • india
                          #7
                          Re: Pin 8 on the bios is shorted to ground

                          Agreed with others opinion-very likely its shorted PCH.

                            Comment

                            Previous template Next

                            Related Topics

                            Collapse
                            • Vesko356
                              [Guide] How to find the right HP bios version to flash
                              by Vesko356
                              First of all thanks to all of our members who have posted previously all methods posted here.
                              Please leave a comment if you find something new,or have anything else to add.
                              -----------------------------------------------------------------------------------------

                              Find by serial number,model number or series

                              If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
                              Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
                              Operating system and OS version.If...
                              08-11-2023, 03:27 AM
                            • barry101
                              Apple 820-3662 VCore shorted to ground.
                              by barry101
                              Hi, Would appreciate some help.
                              I have an Apple Late 2013 15" A1398 MacBook Pro with Logic Board 820-3662.
                              Get charger light but no fan spin or chime. No liquid damage.
                              Found PPBUS and VCORE both shorted to ground. Other rails were ok.
                              Removed VCORE MOSFETS U7310, U7320 and U7330. Found U7330 was in fact shorted.
                              With the 3 MOSFETS removed, get PPBUS and fan spin. VCORE is still hard shorted to ground (0 ohms).
                              Attempted voltage insertion on VCORE to locate short using bench supply set at 1.0 VDC and 4.95 Amps (max current for my...
                              06-24-2025, 07:34 AM
                            • jbonavita
                              ASUS TP500LA BIOS request/repair/merge?
                              by jbonavita
                              Hi, my laptop wont boot at all
                              With original bios no POST, only LED lights
                              With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
                              Some issues
                              A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
                              B- If updated from 500LN version 203 to 300, the battery stops being recognized

                              Things I tried

                              1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...
                              04-29-2025, 09:38 PM
                            • zenius
                              [REQUEST] Dell G3 3579 BIOS Password & AMI Protected Range/BIOS Guard Unlock
                              by zenius
                              Hello, I have an old Dell G3 3579 (ST: 2WQ7LP2-8FC8) with a newer 8FC8 BIOS password. I have successfully attached to the flash chip (W25Q128JVSQ) on the motherboard with a CH341A programmer and made several modifications using Intel FIT (e.g., allow software SPI write) without bricking. I was also able to boot to a modified GRUB shell where I attempted to edit many BIOS security related options like BIOS Guard/Lock, Flash Signature Override, ME FW Image Re-Flash, etc.

                              Unfortunately, some of these modifications like to Intel BIOS Guard failed because it is fused into the PCH. Also,...
                              12-08-2024, 06:13 AM
                            • Wahaz
                              Lenovo Thinkbook 15 G2 ITL i5 (serial number: MP2BFZEF) bios request
                              by Wahaz
                              Hello,

                              I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
                              So I thought it was a Bios problem.
                              I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V....
                              10-30-2023, 08:42 PM
                            • Loading...
                            • No more items.
                            Working...