Is there anything I can do with this deep burned motherboard? (GA401IV)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • bogosort
    Senior Member
    • May 2022
    • 78
    • Canada

    #1

    Is there anything I can do with this deep burned motherboard? (GA401IV)

    Hello,

    I got this board that has a really deep burn that heats up and smokes when injecting voltage.

    Here are photos of the burned one, a donor board for reference (missing the resistors) and the underside







    Is there anything I could do with this?

    Thank you!
    Attached Files
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

    First check whether cpu is alive or not by measuring resistance to GND on cpu vcore/VCCGT coils.

    Comment

    • khaahk
      Badcaps Veteran
      • Dec 2013
      • 758
      • Estonia

      #3
      Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

      Looks like you have to drill a big hole into the board to clean it all up. The pcb is burned into charcoal and layers are interconnected. Depending on what is wrong with the donor, i would try to fix it instead, the burn looks too bad.

      Comment

      • bogosort
        Senior Member
        • May 2022
        • 78
        • Canada

        #4
        Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

        Originally posted by mcplslg123
        First check whether cpu is alive or not by measuring resistance to GND on cpu vcore/VCCGT coils.
        The resistance to GND on cpu vcore looks normal. (Measured on the coils and before the mosfets)

        Comment

        • dellxps15
          Badcaps Legend
          • Feb 2014
          • 1588
          • italy

          #5
          Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

          is the 3rd picture your board or is the working one u have for take picture comparison?

          if it's burned only on top side i think it can be fixable.
          remove the 2 big caps in the green circle.
          blue spot is positive ( i think it is the 19 volt line)
          the yellow is the gnd (ground).

          remove the 2 big caps , so we can see better if the burning zone is the 19volt rail. after that we can give u more tips on where to cut the first layer.
          each time u cut or scrap something clean with ipa (isopropil alchool)
          Attached Files

          Comment

          • bogosort
            Senior Member
            • May 2022
            • 78
            • Canada

            #6
            Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

            Originally posted by dellxps15
            is the 3rd picture your board or is the working one u have for take picture comparison?

            if it's burned only on top side i think it can be fixable.
            remove the 2 big caps in the green circle.
            blue spot is positive ( i think it is the 19 volt line)
            the yellow is the gnd (ground).

            remove the 2 big caps , so we can see better if the burning zone is the 19volt rail. after that we can give u more tips on where to cut the first layer.
            each time u cut or scrap something clean with ipa (isopropil alchool)
            The third picture is from the burned one, unfortunately

            Comment

            • dellxps15
              Badcaps Legend
              • Feb 2014
              • 1588
              • italy

              #7
              Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

              Originally posted by bogosort
              The third picture is from the burned one, unfortunately
              then it's promising as it didnt reach the back side

              Comment

              • bogosort
                Senior Member
                • May 2022
                • 78
                • Canada

                #8
                Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                Originally posted by dellxps15
                is the 3rd picture your board or is the working one u have for take picture comparison?

                if it's burned only on top side i think it can be fixable.
                remove the 2 big caps in the green circle.
                blue spot is positive ( i think it is the 19 volt line)
                the yellow is the gnd (ground).

                remove the 2 big caps , so we can see better if the burning zone is the 19volt rail. after that we can give u more tips on where to cut the first layer.
                each time u cut or scrap something clean with ipa (isopropil alchool)
                Here it is with the two caps removed.



                Blue side shows 2.8 ohms to ground and yellow side 0.2 ohms. Sounds like blue side is indeed 19v rail
                Attached Files

                Comment

                • dellxps15
                  Badcaps Legend
                  • Feb 2014
                  • 1588
                  • italy

                  #9
                  Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                  do a first layer cut (yellow)
                  then second green and then blue cut. clean each time with ipa and try to spot each layer. start always from the outsider (yellow) untill second layer is not burned and go on with that way.
                  check when on blue spot on the other picture i send before the resistance till it goes to OL or high resistance like kiloomh.

                  do little step each time. clean and scrap the burned zone with or a cutting blade or the tools u have in hand ( small dremel with small rotating scraper (the one that dont scrap much but it's very slow)
                  Attached Files

                  Comment

                  • bogosort
                    Senior Member
                    • May 2022
                    • 78
                    • Canada

                    #10
                    Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                    Originally posted by dellxps15
                    do a first layer cut (yellow)
                    then second green and then blue cut. clean each time with ipa and try to spot each layer. start always from the outsider (yellow) untill second layer is not burned and go on with that way.
                    check when on blue spot on the other picture i send before the resistance till it goes to OL or high resistance like kiloomh.

                    do little step each time. clean and scrap the burned zone with or a cutting blade or the tools u have in hand ( small dremel with small rotating scraper (the one that dont scrap much but it's very slow)
                    I don't have a dremel. Is there a good one you recommend? I'll check on amazon so I can get it quickly and update you once it's done. Thank you!

                    Comment

                    • dellxps15
                      Badcaps Legend
                      • Feb 2014
                      • 1588
                      • italy

                      #11
                      Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                      u can use a blade..... like the one that we use to clean glass

                      i use this blade.https://www.amazon.it/Stanley-0-28-5...s%2C107&sr=8-7

                      only the blade without handle.

                      Comment

                      • bogosort
                        Senior Member
                        • May 2022
                        • 78
                        • Canada

                        #12
                        Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                        Originally posted by dellxps15
                        u can use a blade..... like the one that we use to clean glass

                        i use this blade.https://www.amazon.it/Stanley-0-28-5...s%2C107&sr=8-7

                        only the blade without handle.
                        The blue section shows as 0.2 ohms to ground and the yellow zone shows as 0L.

                        Am I in the right direction?

                        Attached Files

                        Comment

                        • dellxps15
                          Badcaps Legend
                          • Feb 2014
                          • 1588
                          • italy

                          #13
                          Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                          the blue part: try to lift the metal just a bit and remove green resistor. then measure blue omh again.
                          Attached Files

                          Comment

                          • bogosort
                            Senior Member
                            • May 2022
                            • 78
                            • Canada

                            #14
                            Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                            Originally posted by dellxps15
                            the blue part: try to lift the metal just a bit and remove green resistor. then measure blue omh again.
                            Blue ohm is 0.2 ohms

                            Attached Files

                            Comment

                            • dellxps15
                              Badcaps Legend
                              • Feb 2014
                              • 1588
                              • italy

                              #15
                              Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                              check omh on yellow and green.

                              remove purple and check green and blue again.
                              Attached Files

                              Comment

                              • bogosort
                                Senior Member
                                • May 2022
                                • 78
                                • Canada

                                #16
                                Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                                Originally posted by dellxps15
                                check omh on yellow and green.

                                remove purple and check green and blue again.
                                Yellow and green are both 2.8m ohms.

                                Here are the readings to ground of both blue and green
                                Attached Files

                                Comment

                                • dellxps15
                                  Badcaps Legend
                                  • Feb 2014
                                  • 1588
                                  • italy

                                  #17
                                  Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                                  cut till the yellow marker and try to lift the metal while cutting.
                                  try to take first metal layer, lift and then cut.
                                  measure blue again after.
                                  Attached Files

                                  Comment

                                  • bogosort
                                    Senior Member
                                    • May 2022
                                    • 78
                                    • Canada

                                    #18
                                    Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                                    Originally posted by dellxps15
                                    cut till the yellow marker and try to lift the metal while cutting.
                                    try to take first metal layer, lift and then cut.
                                    measure blue again after.
                                    It seems that the capacitor has 0.2 ohms no matter how much I scrape.

                                    I am not sure what you mean by lifting the metal.

                                    I checked on the first mosfets if voltage was going through and it does now.

                                    What do you think?

                                    Attached Files

                                    Comment

                                    • dellxps15
                                      Badcaps Legend
                                      • Feb 2014
                                      • 1588
                                      • italy

                                      #19
                                      Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                                      what capacitor u mean ?

                                      ofcourse remove psu, then measure omh on yellow zone.

                                      edit: if board doesnt burn now, it could possible be that it works with intel gpu...

                                      first mosfet u mean the one on the left ? mosfet should be ok and not them shorting.

                                      check yellow value and report back.,
                                      Attached Files
                                      Last edited by dellxps15; 04-16-2023, 11:17 AM.

                                      Comment

                                      • bogosort
                                        Senior Member
                                        • May 2022
                                        • 78
                                        • Canada

                                        #20
                                        Re: Is there anything I can do with this deep burned motherboard? (GA401IV)

                                        Originally posted by dellxps15
                                        what capacitor u mean ?

                                        ofcourse remove psu, then measure omh on yellow zone.

                                        edit: if board doesnt burn now, it could possible be that it works with intel gpu...

                                        first mosfet u mean the one on the left ? mosfet should be ok and not them shorting.

                                        check yellow value and report back.,
                                        I was talking about the DC IN mosfets.

                                        For the capacitor, I was referring to the one showing 0.2 ohms in yellow on the following picture

                                        Here are the resistance readings to ground:

                                        Attached Files

                                        Comment

                                        Related Topics

                                        Collapse

                                        • myth77
                                          MSI GE62VR, MS-16JB burned motherboard
                                          by myth77
                                          I received this laptop, no history and the motherboard was in short circuit on main power rail. Then i noticed that motherboard literaly burned in one part...near the capacitors PC85 and PC86...there were almost 5 mm burned part of the board
                                          That part and capacitors are on PWR_SRC_FBVDDQ rail...and that is main rail powering FBVDDQ mosfets. It was shorted to gnd. Then i cleaned everything, cut all that was burned and with microscope inspection couldnt find any part touching or burned. The resistence is now only 58 ohms relative to GND and that is not good for main power rail. Then...
                                          12-09-2021, 08:36 AM
                                        • gaelican
                                          Asus ROG ga401IV motherboard - AC Short Protection resistor getting hot
                                          by gaelican
                                          Hi,

                                          I am working on an Asus ROG laptop repair. I was able to find that there is a short on the motherboard, and the 20 volts from the charger only gets to the first mosfet before disappearing.

                                          When looking around with a thermal camera, I noticed the chip marked "14C" in the picture was getting warm. Nothing else was receiving heat.

                                          I found a boardview diagram and schematic for a motherboard that looks nearly identical, that has the same component. This appears to be marked as "AC Short Protection" with a value of 13.7KOhms.

                                          ...
                                          02-21-2025, 01:51 PM
                                        • glovecaps
                                          Asus ROG Strix Scar G533qm with a G733qm Motherboard, can I modify the Bios to accept G533 Bios
                                          by glovecaps
                                          Hello,

                                          I have a Asus ROG Strix Scar 15 (G533QM) that had a dead motherboard (Graphics card dead) and after trying to fix the motherboard with no success, I bit the bullet on a sale for a new motherboard. I ordered a motherboard for the 15 inch model which is the one that I have, and when the motherboard arrived it wasn't for a little while that I saw it was from the 17 inch model.

                                          My question is, can I update the Bios on this G733 motherboard to a G533 Bios.

                                          The reason for wanting to do this is that the keyboard isn't working as it should, and I think this...
                                          11-25-2024, 04:23 PM
                                        • Document Archive
                                          ASUS ROG GA401IV-HA116T Notebook Zephyrus G14 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ASUS ROG GA401IV-HA116T Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the GA401IV-HA116T boardview and GA401IV-HA116T schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
                                          09-07-2024, 01:00 AM
                                        • Document Archive
                                          ASUS ROG GA401IV-HE132T Notebook Zephyrus G14 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ASUS ROG GA401IV-HE132T Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the GA401IV-HE132T boardview and GA401IV-HE132T schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
                                          09-07-2024, 01:00 AM
                                        • Loading...
                                        • No more items.
                                        Working...