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Scala2_ext BA41-01424A starts late and no display

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    Scala2_ext BA41-01424A starts late and no display

    Hi!
    Samsung Scala2 BA 41 .
    After Applying power don't show any reading at 0.00Amps .
    Stays like that until i press power button ,than Show Amps shows
    0.01 for 10-12 seconds ,Than Board starts Amps reading goes to 0.52 to 67 .
    if power button pressed turns off as normal , if turned on takes same time 11 seconds to start. same time takes battery to starts

    is SMSC MEC1300-NU defective ? is it programmable IO chip.
    Does any one has this board ,i want image of NEC TOKIN image ,seems 1 resistance or pf missing

    Thanks

    #2
    Re: Scala2_ext BA41-01424A starts late and no display

    hi. Is this U518?
    Attached Files
    Last edited by mon2; 04-17-2021, 06:25 PM. Reason: revised for BA41-01424A schematic

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      #3
      Re: Scala2_ext BA41-01424A starts late and no display

      Originally posted by mon2 View Post
      hi. Is this U518?
      No its SMSC MEC1300-NU

      Comment


        #4
        Re: Scala2_ext BA41-01424A starts late and no display

        Originally posted by ravi_1617 View Post
        Hi!
        Samsung Scala2 BA 41 .
        After Applying power don't show any reading at 0.00Amps .
        Stays like that until i press power button ,than Show Amps shows
        0.01 for 10-12 seconds ,Than Board starts Amps reading goes to 0.52 to 67 .
        if power button pressed turns off as normal , if turned on takes same time 11 seconds to start. same time takes battery to starts

        is SMSC MEC1300-NU defective ? is it programmable IO chip.
        Does any one has this board ,i want image of NEC TOKIN image ,seems 1 resistance or pf missing

        Thanks
        Please help, where to start from ,Already replaced twice, IO chip ,no response not even starting.

        please

        Thanks

        Comment


          #5
          Re: Scala2_ext BA41-01424A starts late and no display

          The SMSC is p/n MEC1310-NU (not MEC1300-NU). Which part do you show in your schematic? Please confirm @ U518.

          Start with your power rails. With an attached adapter - check the voltage @ each coil. Is each power rail working properly ?

          Comment


            #6
            Re: Scala2_ext BA41-01424A starts late and no display

            Thanks for reply
            Board came with SMSC MEC1300-NU ,Might be tampered/ changed i don't know ,Well When the board starts after power button pressed seems fine

            L9 P5.0V_AUX
            L 10 P3.3V_AUX
            L 8 1.5 for Ram
            L 2,3 .8 cpu_core
            L501 .8 EGFX_CORE

            3.3 & 5 starts power switch pressed ,after 12 seconds board starts fan spins led glows
            My board is Ba41-01424a

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