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ACER Z1402 on around 10 second and off

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    ACER Z1402 on around 10 second and off

    Checked 19v, 3v, 5v, 10.5v, etc seem ok. i found one problem on switch button has 9.55v.

    Try change Q7 and Q57 ic. but problem still exist, any suggestion? does the problem come from EC controller ic?
    Attached Files

    #2
    Re: ACER Z1402 on around 10 second and off

    Have you solve the problem? Mine also have the same ptoblem.

    Comment


      #3
      Re: ACER Z1402 on around 10 second and off

      same problem too

      Comment


        #4
        Re: ACER Z1402 on around 10 second and off

        can you please tell us the original problem..so that we can relate.. and what have you done so far...any schematics for this unit..
        Never stop LEARNING because life never stops TEACHING!

        Comment


          #5
          Re: ACER Z1402 on around 10 second and off

          The schematic is already posted - https://www.badcaps.net/forum/showth...ighlight=Z1402
          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

          Comment


            #6
            Re: ACER Z1402 on around 10 second and off

            ok did you check the on of switch? if the switch is open you get 3.3v if its close you get 0v
            Never stop LEARNING because life never stops TEACHING!

            Comment


              #7
              Re: ACER Z1402 on around 10 second and off

              Did you solve the problem. I got mine same problem 9v on power switch

              Comment


                #8
                Re: ACER Z1402 on around 10 second and off

                Originally posted by bigbily09 View Post
                Did you solve the problem. I got mine same problem 9v on power switch
                https://www.badcaps.net/forum/attach...3&d=1537151559

                check all the mosfets.. switch must be 3.3v when open and 0v when closed..
                Never stop LEARNING because life never stops TEACHING!

                Comment


                  #9
                  Re: ACER Z1402 on around 10 second and off

                  9V sounds ok there.
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                  Comment


                    #10
                    Re: ACER Z1402 on around 10 second and off

                    Originally posted by bigbily09 View Post
                    Did you solve the problem. I got mine same problem 9v on power switch
                    9V is ok like piernov say : resistor divider .
                    Check Q7 , R174

                    Comment


                      #11
                      Re: ACER Z1402 on around 10 second and off

                      check 19v power rail is present or maybe shorted and check the 3.3v and 5v are present if present all if the problem is not exist put the thermal paste and clean the fan if dirty thank u hope u help my suggestion

                      Comment


                        #12
                        Re: ACER Z1402 on around 10 second and off

                        Anyone solve this problem?

                        Comment


                          #13
                          Re: ACER Z1402 on around 10 second and off

                          Originally posted by SACR View Post
                          Anyone solve this problem?
                          post your voltage readings(VIN, 3/5VALW, powerswitch)

                          Comment


                            #14
                            Re: ACER Z1402 on around 10 second and off

                            Originally posted by BlueRay View Post
                            Checked 19v, 3v, 5v, 10.5v, etc seem ok. i found one problem on switch button has 9.55v.

                            Try change Q7 and Q57 ic. but problem still exist, any suggestion? does the problem come from EC controller ic?
                            Thanks reply. My problem same like this...

                            Comment


                              #15
                              Re: ACER Z1402 on around 10 second and off

                              What is the problm if PWM_IN 3.3v is drop going to 0vdin the picture of screen is problm also.?

                              Comment


                                #16
                                Re: ACER Z1402 on around 10 second and off

                                i found problem same too

                                Comment


                                  #17
                                  Re: ACER Z1402 on around 10 second and off

                                  Everybody has same problem with mine too. Any suggestion or solution do you have? Wait for any response. Thank you.

                                  Comment


                                    #18
                                    Re: ACER Z1402 on around 10 second and off

                                    Anyone who solve this problem? any suggestion?

                                    Comment


                                      #19
                                      Re: ACER Z1402 on around 10 second and off

                                      Did you gays check the y2 (32.7khz)? Not done but not any improvement from change y2. So any further movement.
                                      Attached Files

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