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The problem with ASUS Transformer Book T100TAF motherboard

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    The problem with ASUS Transformer Book T100TAF motherboard

    1) After one month of usage with windows 8.1, monitor turn black and won't turn on. I fixed this. Opened the back of the case and removed battery. After the battery was placed back Transformer worked one week.
    2) Then suddenly almost the same happened (monitor turned black and won't turn on). But this time I removed micro SD card and heard windows sound. And if I put it back there was a sound again. So I thought that there were some trouble with monitor. I opened back case of tablet and saw that something with the name of "6R8 434 RTR" was out of order. You can see the attached pictures. I am wondering what is that square thing and if it can be fixed. I do not trust engineers here as they generally do fry the board with their irons and surely won't fix it. I am from Uzbekistan and sending that back to ASUS will cost like 100-150$. I was fan of ASUS devices but now wondering of the quality ASUS provides as that thing worked only 2 months. I bought it as a new one not refurbished.


    Motherboard: T100TAF WIFI T3 MAIN BOARD REV. 2.0 PCB
    I was told that the broken square is 6.8 uH coil

    Is that device can be fixed?
    Attached Files

    #2
    Re: The problem with ASUS Transformer Book T100TAF motherboard

    well you need a new inductor (that's what it's called)
    but as you said - it's a coil.
    i cant see it burning like that unless there is something else wrong!

    Comment


      #3
      Re: The problem with ASUS Transformer Book T100TAF motherboard

      Originally posted by stj View Post
      i cant see it burning like that unless there is something else wrong!
      It could be the only culprit, the fabrication process isn't perfect and sometimes duds come out.
      Originally posted by PeteS in CA
      Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
      A working TV? How boring!

      Comment


        #4
        Re: The problem with ASUS Transformer Book T100TAF motherboard

        Check the diode outlined in red. It may be shorted.
        Attached Files
        Machina improba! Vel mihi ede potum vel mihi redde nummos meos!

        Comment


          #5
          Re: The problem with ASUS Transformer Book T100TAF motherboard

          look about 1oclock from the burnt mess.mosfet missing?

          Comment


            #6
            Re: The problem with ASUS Transformer Book T100TAF motherboard

            Originally posted by kc8adu View Post
            look about 1oclock from the burnt mess.mosfet missing?
            Looks like a normally un-populated part. Look, there is even a 0 ohm shunt jumping the FET pads.
            Muh-soggy-knee

            Comment


              #7
              Re: The problem with ASUS Transformer Book T100TAF motherboard

              See http://forum.hddguru.com/viewtopic.php?f=10&t=30931

              Comment


                #8
                Re: The problem with ASUS Transformer Book T100TAF motherboard

                I have an Asus lappy and it's been serving me for about 9-10 months w/o problems.
                Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

                My computer doubles as a space heater.

                Permanently Retired Systems:
                RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
                Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


                Kooky and Kool Systems
                - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
                - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
                - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
                - Main Workstation - Fully operational!

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