Help identifying mosfet on Razer Blade RZ09 (CH570_MB_NT)

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  • redbaron1007
    Senior Member
    • Jun 2021
    • 112
    • United States

    #1

    Help identifying mosfet on Razer Blade RZ09 (CH570_MB_NT)

    I have a Razer laptop (RZ09 MB# CH570_MB_NT) that has a shorted mosfet marked BND M03 E067 that I'm unable to find anywhere online. Does anyone either know what the part number is for this mosfet or have a schematic I can find it in?

    Backstory on the whole thing the laptop was plugged into a lamp at a hotel. The lamp got unplugged while it was charging and now the system won't power on anymore. I found the caps around this mosfet shorted and when I injected voltage into the caps the mosfet got hot and my bench psu was pulling 5A. Pretty sure this is all that's wrong with the laptop I'm just unable to find anything online about what the mosfet actually is.

    Thanks in advance for any help or suggestions.
  • khaahk
    Badcaps Veteran
    • Dec 2013
    • 806
    • Estonia

    #2
    looks like Monolithic Power Systems NB695GD

    Comment

    • mon2
      Badcaps Legend
      • Dec 2019
      • 14618
      • Canada

      #3
      .

      Comment

      • redbaron1007
        Senior Member
        • Jun 2021
        • 112
        • United States

        #4
        I was only able to find them on aliexpress, but am not sure of the two options listed which would be the correct one for this laptop. I didn't have any luck finding a datasheet online. I know from experience sometimes these one letter differences don't matter, but I also know it can do something important like change where VCC is on a chip.

        Would be just amazing if someone at razer would leak their schematics like at the other laptop manufacturers.

        https://www.aliexpress.us/item/32568...origin_prod%3A

        Comment

        • khaahk
          Badcaps Veteran
          • Dec 2013
          • 806
          • Estonia

          #5
          Yeah, no datasheets and not so sure about the product name also, seems like NB695GD could be marked "AWU" also. At the moment we can rely on aliexpress sellers (we all know how reliable they are).
          https://www.aliexpress.com/item/1005008504636993.html

          Comment

          • redbaron1007
            Senior Member
            • Jun 2021
            • 112
            • United States

            #6
            Originally posted by khaahk
            Yeah, no datasheets and not so sure about the product name also, seems like NB695GD could be marked "AWU" also. At the moment we can rely on aliexpress sellers (we all know how reliable they are).
            https://www.aliexpress.com/item/1005008504636993.html
            I just ordered a pack of those so hopefully they will work out and I can get this one up and running. I appreciate the help finding it.

            Comment

            • redbaron1007
              Senior Member
              • Jun 2021
              • 112
              • United States

              #7
              Originally posted by khaahk
              Yeah, no datasheets and not so sure about the product name also, seems like NB695GD could be marked "AWU" also. At the moment we can rely on aliexpress sellers (we all know how reliable they are).
              https://www.aliexpress.com/item/1005008504636993.html
              I got the part you linked in and it was the correct one. Only problem I ran into was it wasn't the only issue. The SRKMA chipset chip was also shorted. I replaced the blown mosfet and check around the circuit and one 0ohm resistor was also blown so I replaced that. Plugged everything back up and still not life. Checked again for shorts around the mosfet and two capacitors right above it were still shorted. I removed the mosfet and they were still short. When I injected voltage in the only thing getting warm was the SRKMA chipset. When I pulled it off the shorts went away on the capacitors above the mosfet so I'd say it's safe to say it was the main issue all along. I found a replacement on aliexpress so hopefully it'll show up and get this one up and running again.

              Does anyone have any suggestions for preheater and hot air temps to put the new chipset back on with. I know from experiance with PS5's how fiddly these types of chips can be sometimes with temps.

              For context my hot air is a quick 861DW and my preheater is a Puhui T8280. Usually I set the preheater to 200C and my hot air to 750F(~400C) for bga work on game consoles.

              Comment

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