E1-510 NO display

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  • String2016
    Badcaps Legend
    • Nov 2015
    • 2229
    • philippines

    #1

    E1-510 NO display

    I need help on this Acer E1-510 la-a621p, the problem is turns on but no display.I have already replaced the bios chip and flash the bios with the one here in this forum, but still no display, cpu is warm.I flashed the main bios only, because when i try to flash ec using svod3 it says pins false, but i check the pins with connectivity is ok.i have 0.9v on the coil near cpu.voltages on the coil have 3.3v and 5v near the ram area.anyone please
  • digitalpc
    Badcaps Veteran
    • Jun 2016
    • 305
    • .DLL

    #2
    Re: E1-510 NO display

    first check ram votlage should be 1.35v or 1.5v

    Comment

    • String2016
      Badcaps Legend
      • Nov 2015
      • 2229
      • philippines

      #3
      Re: E1-510 NO display

      on the pin on the ram slot it has 1.35v

      Comment

      • piernov
        Super Moderator
        • Jan 2016
        • 4435
        • France

        #4
        Re: E1-510 NO display

        Make sure you're using known good DDR3L.
        No backlight/no image even on external? Pressing caps lock key doesn't trigger caps lock LED? Not POSTing at all?
        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • String2016
          Badcaps Legend
          • Nov 2015
          • 2229
          • philippines

          #5
          Re: E1-510 NO display

          already tried replacing with good ram ddr3l still persist, blue light pressing and fan spinnnig but no caps lock light, no image on both internal and external

          Comment

          • mcplslg123
            Badcaps Legend
            • Jun 2015
            • 7262
            • india

            #6
            Re: E1-510 NO display

            PJ504/506/601,PH801/802 Voltage??PU801 PIN 2/21/15 voltage?? 1.35V present on Pin30 of Dramslot??

            Comment

            • String2016
              Badcaps Legend
              • Nov 2015
              • 2229
              • philippines

              #7
              Re: E1-510 NO display

              PJ504=1.35V
              PJ506=0.6V
              PJ601=1.04V
              PU801 PIN2 3.3V
              PIN15=3.3V
              PIN21= 5V
              DRAMRST= 0.2V

              I cannot find PH801/802 on the board

              Comment

              • mcplslg123
                Badcaps Legend
                • Jun 2015
                • 7262
                • india

                #8
                Re: E1-510 NO display

                DRAMRST should be 1.3V. Measure voltage on all pins of pu501 and post here.

                Comment

                • String2016
                  Badcaps Legend
                  • Nov 2015
                  • 2229
                  • philippines

                  #9
                  Re: E1-510 NO display

                  pu501

                  pin1=0v
                  pin2=0v
                  pin3=0v
                  pin4=0v
                  pin5=1.35v
                  pin6=0v
                  pin7=3.1v
                  pin8=3.2v
                  pin9= 0.9v
                  pin10=1.3v
                  pin11=5v
                  pin12=5.1v
                  pin13=5v
                  pin14=0v
                  pin15=0v
                  pn16=1.3v
                  pin17=1.3v
                  pin18=4.9v
                  pin19=1.3v
                  pin20=0.6v

                  Comment

                  • String2016
                    Badcaps Legend
                    • Nov 2015
                    • 2229
                    • philippines

                    #10
                    Re: E1-510 NO display

                    I think the missing voltage is the LGATE supposed to have 1.35v and its connected to pin4 of PQ503, i measured pin 4 missing 1.35 v

                    Comment

                    • piernov
                      Super Moderator
                      • Jan 2016
                      • 4435
                      • France

                      #11
                      Re: E1-510 NO display

                      Try other BIOS dumps.
                      Note that with dirty ME/TXE, it may take a minute for display to turn on.
                      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                      Comment

                      • String2016
                        Badcaps Legend
                        • Nov 2015
                        • 2229
                        • philippines

                        #12
                        Re: E1-510 NO display

                        @piernov i have downloaded the bios here is this forum as many confirmed it is working for this model and board , already replaced the chip. the problem is still no display

                        Comment

                        • String2016
                          Badcaps Legend
                          • Nov 2015
                          • 2229
                          • philippines

                          #13
                          Re: E1-510 NO display

                          anyone can help on this please

                          Comment

                          • String2016
                            Badcaps Legend
                            • Nov 2015
                            • 2229
                            • philippines

                            #14
                            Re: E1-510 NO display

                            anyone can help on this please the LGATE is missing on pin19

                            Comment

                            • mcplslg123
                              Badcaps Legend
                              • Jun 2015
                              • 7262
                              • india

                              #15
                              Re: E1-510 NO display

                              Your measurement of PU501 seems little confusing. If you have 0.6V at pin20 you should have 0.6V at pin2 as well.Pin4 REF voltage is missing.PIN6 FB is 0V which is wrong. Without ref and fb working, your fet gate will not open. If you have a same spare ic try replacing it.

                              Comment

                              • String2016
                                Badcaps Legend
                                • Nov 2015
                                • 2229
                                • philippines

                                #16
                                Re: E1-510 NO display

                                i double checked again the measurement yes pin 20=0.6v pin2=0.6v and pin 4 as well. i cannot find the same chip is there any replacement value on this?

                                Comment

                                • String2016
                                  Badcaps Legend
                                  • Nov 2015
                                  • 2229
                                  • philippines

                                  #17
                                  Re: E1-510 NO display

                                  can i replace it with 51716 chip?

                                  Comment

                                  • mcplslg123
                                    Badcaps Legend
                                    • Jun 2015
                                    • 7262
                                    • india

                                    #18
                                    Re: E1-510 NO display

                                    Replace with Richtek code J7=

                                    Comment

                                    • String2016
                                      Badcaps Legend
                                      • Nov 2015
                                      • 2229
                                      • philippines

                                      #19
                                      Re: E1-510 NO display

                                      i replaced the chip with marking J7 and PQ502 became shorted

                                      Comment

                                      • mcplslg123
                                        Badcaps Legend
                                        • Jun 2015
                                        • 7262
                                        • india

                                        #20
                                        Re: E1-510 NO display

                                        RT8207MZQW=J7

                                        So your J7 ic is likely bad. Was it new or you pulled from scrap mb??

                                        Comment

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