Announcement

Collapse
No announcement yet.

Dell n5110 power problem

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Dell n5110 power problem

    hi all friends
    dell n5110
    mb : 10260-1
    dq15 dis nvida
    the mb problem is don't power on when the rtc battery is placed
    and if it is removed the mb don't power on automatically
    but when i press the power button the mb on and display ok
    in standby mod (s5)
    3D3V_S5 volt is missing
    pl4101 0v
    pl4102 0v
    i cant find short in the 3D3V_S5 line
    i was replaced pu4103 (tps51123) and pr4110 and pch hm67 but with no luck
    what can i do more
    help please

    thanks
    Attached Files

    #2
    Re: Dell n5110 power problem

    Check Q6001 & Q6002 for RTC issue. 3D3V_S5 is generated by TPS51123-may be not properly soldered or the ic itself is bad. Why you replaced PCh??

    Comment


      #3
      Re: Dell n5110 power problem

      Originally posted by mcplslg123 View Post
      Check Q6001 & Q6002 for RTC issue. 3D3V_S5 is generated by TPS51123-may be not properly soldered or the ic itself is bad. Why you replaced PCh??
      thanks for replay
      i was replaced tps51123 and q6002
      3D3V_S5 is generated after press power button
      i was replaced PCh because when i injected 3.3v in +side for c6001 the pch has a few overheating
      thanks

      Comment


        #4
        Re: Dell n5110 power problem

        You didnt mentioned voltage on all pins of Q6001/6002-with cmos battery/without cmos battery.

        Comment


          #5
          Re: Dell n5110 power problem

          without cmos battery
          q6001
          pin1 0v
          pin2 3.27v
          pin3 3.13v
          q6002
          pin1 gnd
          pin2 0v
          pin3 0v
          with cmos battery
          pin1 3v
          pin2 3.27v
          pin3 3.13v
          q6002
          pin1 gnd
          pin2 3.06
          pin3 0v

          Comment


            #6
            Re: Dell n5110 power problem

            Originally posted by menshawy View Post
            without cmos battery
            q6001
            pin1 0v
            pin2 3.27v
            pin3 3.13v
            q6002
            pin1 gnd
            pin2 0v
            pin3 0v
            with cmos battery
            pin1 3v
            pin2 3.27v
            pin3 3.13v
            q6002
            pin1 gnd
            pin2 3.06
            pin3 0v

            do u check the diodes page 60

            Comment


              #7
              Re: Dell n5110 power problem

              Originally posted by menshawy View Post
              without cmos battery
              q6001
              pin1 0v
              pin2 3.27v
              pin3 3.13v
              q6002
              pin1 gnd
              pin2 0v
              pin3 0v
              with cmos battery
              pin1 3v
              pin2 3.27v
              pin3 3.13v
              q6002
              pin1 gnd
              pin2 3.06
              pin3 0v
              measurements are correct.

              Comment

              Working...