HP Compaq 2710p: No Power; No Sign of Life

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  • speedypro
    Badcaps Veteran
    • Feb 2013
    • 561
    • United Kingdom
    #1

    HP Compaq 2710p: No Power; No Sign of Life

    Has anyone ever worked on these laptops before?

    Power supply works 100%. Tested various connections on the MM and I get my 19v; ground connection, on MM, and + terminal on dc jack . Any pointers of where else to check?

    Regards
    Full-time computer repair tech (10am - 6pm) and full-time, (8am - 11pm), Ruby on Rails Developer
    Tags: None
    • Francisco.s
      Badcaps Veteran
      • Jan 2013
      • 686
      • Spain
      #2
      Re: HP Compaq 2710p: No Power; No Sign of Life

      Do you know if it is able to charge the battery?
      Is there 19 volts in the output mosfet of the charging circuit?, also check the 3,3-alw and 5-alw voltages.
      Check also if there is voltage in power button terminals.
      Post results.

        Comment

        • speedypro
          Badcaps Veteran
          • Feb 2013
          • 561
          • United Kingdom
          #3
          Re: HP Compaq 2710p: No Power; No Sign of Life

          Hi.

          I cant seem to find a schematic to locate the mosfet. Also what is 3,3-alw and 5-alw voltage?

          And yes I get voltage at pwd button switch pins (19v)
          Full-time computer repair tech (10am - 6pm) and full-time, (8am - 11pm), Ruby on Rails Developer

            Comment

            • Francisco.s
              Badcaps Veteran
              • Jan 2013
              • 686
              • Spain
              #4
              Re: HP Compaq 2710p: No Power; No Sign of Life

              I can´t find the schematic either, but all laptops have a regulator circuit that feeds +5VALW and +3VALW like in the follow screen capture.
              Attached Files

                Comment

                • Francisco.s
                  Badcaps Veteran
                  • Jan 2013
                  • 686
                  • Spain
                  #5
                  Re: HP Compaq 2710p: No Power; No Sign of Life

                  And yes I get voltage at pwd button switch pins (19v)
                  Do you want to say that you have 19 volts in power button switch?
                  I think there'll be a mistake, 19 volts is too much.
                  And what about charger circuit?

                    Comment

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