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Dell Inspiron 15-3542 2beeps porblem

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    Dell Inspiron 15-3542 2beeps porblem

    hi friends
    i have Dell Inspiron 15-3542 with 2beeps problem
    mb Wistron Cedar 13269-1
    i try to change the ram and clean ram slot and reflash bios with ok tested one
    but with no result
    pl4902 1.35v
    dm1 -ram slot volts(with ram)
    pin 204 vtt1 = .675v
    pin 199 3.4v
    pin 30 DDR3_DRAMRST# 0V
    R410 PIN1 1.35v
    pin2 0v
    it is fault cpu ?
    any help please
    thanks

    Attached Files
    Last edited by menshawy; 09-27-2020, 05:57 AM.

    #2
    Re: Dell Inspiron 15-3542 2beeps porblem

    What is resistance to ground on pin30(dramrst#)?
    Check resistance of R410.

    Also check continuity between pin2 of R410 and pin 30.
    Last edited by Spider1211; 09-27-2020, 06:14 AM.

    Comment


      #3
      Re: Dell Inspiron 15-3542 2beeps porblem

      Q1201/1202 working?? Most of the time its not cpu fault. have patience, this can be solved.

      Comment


        #4
        Re: Dell Inspiron 15-3542 2beeps porblem

        Originally posted by Spider1211 View Post
        What is resistance to ground on pin30(dramrst#)?
        Check resistance of R410.

        Also check continuity between pin2 of R410 and pin 30.
        resistance to ground on pin30 is 0L
        r410 is 0.47k ohm ok and there is no resistance to ground (0L) on both side
        thanks friend

        Comment


          #5
          Re: Dell Inspiron 15-3542 2beeps porblem

          Originally posted by mcplslg123 View Post
          Q1201/1202 working?? Most of the time its not cpu fault. have patience, this can be solved.
          q1201
          D 5V OK
          S 1.3V
          G 1.35V OK
          Q1202
          D 1.35V OK
          S 1.35V
          G 5V
          thanks for help

          Comment


            #6
            Re: Dell Inspiron 15-3542 2beeps porblem

            Check Q1801. What is voltage on PCH_SMBDATA (pin200 on ram slot) and PCH_SMBCLK (pin202)?

            Do you have a bench power supply? If yes, what is current draw when board is on (with and without RAM)?

            Comment


              #7
              Re: Dell Inspiron 15-3542 2beeps porblem

              Originally posted by Spider1211 View Post
              Check Q1801. What is voltage on PCH_SMBDATA (pin200 on ram slot) and PCH_SMBCLK (pin202)?

              Do you have a bench power supply? If yes, what is current draw when board is on (with and without RAM)?
              q1801 all pins 3.3v
              ram slot pin 200 and 202 3.3v
              thanks

              Comment


                #8
                Re: Dell Inspiron 15-3542 2beeps porblem

                Something is wrong in ram circuit only. You need to check full ram requirements as per schematic.

                Comment


                  #9
                  Re: Dell Inspiron 15-3542 2beeps porblem

                  Originally posted by mcplslg123 View Post
                  Something is wrong in ram circuit only. You need to check full ram requirements as per schematic.
                  ok

                  Comment


                    #10
                    Re: Dell Inspiron 15-3542 2beeps porblem

                    problem solved by reflash bios with file extracted from dell website by machine service tag
                    thanks for Spider1211 & mcplslg123 and thanks for all
                    Last edited by menshawy; 10-10-2020, 03:48 PM.

                    Comment

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