Scala2_ext BA41-01424A starts late and no display

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  • ravi_1617
    YY Solutions
    • Jan 2012
    • 343
    • India
    #1

    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
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13931
      • Canada
      #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

        Comment

        • ravi_1617
          YY Solutions
          • Jan 2012
          • 343
          • India
          #3
          Re: Scala2_ext BA41-01424A starts late and no display

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

            Comment

            • ravi_1617
              YY Solutions
              • Jan 2012
              • 343
              • India
              #4
              Re: Scala2_ext BA41-01424A starts late and no display

              Originally posted by ravi_1617
              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

                • mon2
                  Badcaps Legend
                  • Dec 2019
                  • 13931
                  • Canada
                  #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

                    • ravi_1617
                      YY Solutions
                      • Jan 2012
                      • 343
                      • India
                      #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

                        Comment

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