sony vaio PCG-7141L NO POWER

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Romulo
    Badcaps Veteran
    • Nov 2016
    • 484
    • Philippines

    #1

    sony vaio PCG-7141L NO POWER

    Hi everyone this is the first time i troubleshoot this motherboard I need help and advise on this I have receive this Sony vaio vgn-ns140e Model no;PCG-7141L and motherboard number; MBX 202 M790 IP-0087J01 REV.1.1 which is NO POWER no led light and battery charge light but there is 19.9 volts on dc. here is the measurement below;

    PQ24 PIN 1.19.9V
    2. 19.9V
    3. 19.9V
    4. 4.17V
    5. 19.9V
    6. 19.9V
    7. 19.9V
    8. 19.9V
    PQ25 PIN 1.19.9V
    2. 19.9V
    3. 19.9V
    4. 19.9V
    5. 2.55V
    6. 2.55V
    7. 2.55V
    8. 2.55V

    PU1 BQ2475 PIN 1. 3.3V
    2. 2.5V
    3. 2.5V
    4. 2.5V
    5.4..17V
    6. 1.69V
    7. 0.05V
    8. 2.82V
    9. 0.05V
    10. 3.34V
    11. 3.34V
    12. 1.14V
    13. 2.5V
    14. 2.5V
    15.0.08V
    16. 0V
    17. 0.14V
    18.0.05V
    19. 0.05V
    20. 0.05V
    21.0.05V
    22.0.05V
    23.0.05V
    24.0.05V
    25.0.05V
    26.0.05V
    27.0.05V
    28. 19.79V
    PU12 the bios chip has voltage on pin3 1.6v, pin 7 2.4v pin 8 2.4v and there is no 3v on power switch

    anyone please help me advise what is the culprit on this board please thanks in advance
    Last edited by Romulo; 02-19-2017, 07:13 AM.
  • mielta
    Badcaps Veteran
    • Apr 2015
    • 368
    • Germany

    #2
    Re: sony vaio PCG-7141L NO POWER

    hi
    on pq25 at pin 5678 there must be 19v
    check if there is a short to ground
    or remove PR9 and check 19v at pin 5678 at pq25

    Comment

    • smali
      Badcaps Veteran
      • Sep 2014
      • 287
      • Pakistan

      #3
      Re: sony vaio PCG-7141L NO POWER

      check your I/O (KBC) controller..may be it short..check it VCC pin how many voltage it receiving..it must 3.3v on vcc if it is less than 3v and also check with finger 3v/5v driver ic if KBC is short then 3v/5v driver ic will be heatup..

      Comment

      • Romulo
        Badcaps Veteran
        • Nov 2016
        • 484
        • Philippines

        #4
        Re: sony vaio PCG-7141L NO POWER

        thanks for the response @mielta i remove PR9 now there is 3.55v on PQ25 PIN 5678 before there is only 2.55v but still not reaching 19v and also notice PL 1 indutor 100 has only reading of 0.5v.and PL2 capacitor have 0voltage any advise please i need help on this
        Last edited by Romulo; 02-19-2017, 07:20 PM.

        Comment

        • Romulo
          Badcaps Veteran
          • Nov 2016
          • 484
          • Philippines

          #5
          Re: sony vaio PCG-7141L NO POWER

          @smalli there is no short on kbc

          Comment

          • Romulo
            Badcaps Veteran
            • Nov 2016
            • 484
            • Philippines

            #6
            Re: sony vaio PCG-7141L NO POWER

            anyone please advise and help on this please I have attached the schematic
            Attached Files

            Comment

            • Romulo
              Badcaps Veteran
              • Nov 2016
              • 484
              • Philippines

              #7
              Re: sony vaio PCG-7141L NO POWER

              Anyone please help

              Comment

              • Romulo
                Badcaps Veteran
                • Nov 2016
                • 484
                • Philippines

                #8
                Re: sony vaio PCG-7141L NO POWER

                Update after i replace pr9 and remove again and test now there is no voltage on pq25 pin5678 and no voltage on the pads of pr9 any help please

                Comment

                • Romulo
                  Badcaps Veteran
                  • Nov 2016
                  • 484
                  • Philippines

                  #9
                  Re: sony vaio PCG-7141L NO POWER

                  anyone please help me to find the culprit on this.or can anyone share working bios for this ill try to flash bios

                  Comment

                  • Romulo
                    Badcaps Veteran
                    • Nov 2016
                    • 484
                    • Philippines

                    #10
                    Re: sony vaio PCG-7141L NO POWER

                    any help on this please

                    Comment

                    • mielta
                      Badcaps Veteran
                      • Apr 2015
                      • 368
                      • Germany

                      #11
                      Re: sony vaio PCG-7141L NO POWER

                      Hi
                      You must check PQ25 und PU1 inf any Short

                      best regards

                      Comment

                      • Romulo
                        Badcaps Veteran
                        • Nov 2016
                        • 484
                        • Philippines

                        #12
                        Re: sony vaio PCG-7141L NO POWER

                        I already checked pu1 above post is the reading after i remove the Pr 9 there is no voltage on pin 5678 on pq25 and i checked the resistance of pq25 pin 5678 it shows 0.35ohms the same at the pads of pr9 once it remove any advise please

                        Comment

                        • cyberhack
                          Badcaps Veteran
                          • Feb 2013
                          • 466
                          • Uk

                          #13
                          Re: sony vaio PCG-7141L NO POWER

                          PU1 pin 5 is not correct ACDEC should be fixed PD6 could be faulty or the voltage from page 42 AC_OFF.
                          Last edited by cyberhack; 02-21-2017, 04:35 AM.

                          Comment

                          • mielta
                            Badcaps Veteran
                            • Apr 2015
                            • 368
                            • Germany

                            #14
                            Re: sony vaio PCG-7141L NO POWER

                            Hi
                            Remove the Battery and Powersupply then give 19v at pq25 pin 5678 with
                            a Labsuply
                            Check witch piece would be hot.

                            Comment

                            • mielta
                              Badcaps Veteran
                              • Apr 2015
                              • 368
                              • Germany

                              #15
                              Re: sony vaio PCG-7141L NO POWER

                              Hi
                              Thats also possible what Cyberhack said i had this problem also by an Sony Labtop
                              After i dissconnet the Biosbattery for a moment
                              the Machine run again

                              Comment

                              • cyberhack
                                Badcaps Veteran
                                • Feb 2013
                                • 466
                                • Uk

                                #16
                                Re: sony vaio PCG-7141L NO POWER

                                All so look for spillage and yes i have had laptop start after bios battery discharge.

                                Comment

                                • Romulo
                                  Badcaps Veteran
                                  • Nov 2016
                                  • 484
                                  • Philippines

                                  #17
                                  Re: sony vaio PCG-7141L NO POWER

                                  Thanks for the response guys i checked pd6 you are right cyberhacl it is shorted to the ground @ mielta i cannot inject 19.5v at pq25 pin 5678 cause i dont have psu lab.ill try to change pd6.and also can i change pr9 to R020 cause original is R015 and i dont have spare.

                                  Comment

                                  • mielta
                                    Badcaps Veteran
                                    • Apr 2015
                                    • 368
                                    • Germany

                                    #18
                                    Re: sony vaio PCG-7141L NO POWER

                                    Hi
                                    Please disconnect Biosbatterie and messure PD6 again

                                    Comment

                                    • Romulo
                                      Badcaps Veteran
                                      • Nov 2016
                                      • 484
                                      • Philippines

                                      #19
                                      Re: sony vaio PCG-7141L NO POWER

                                      Remove bios battery still only 0.45volts i already change pd 6 and pu1 still there is no voltage on pq25 pin 5678 replace pr 9 still the same there is no 3v on power switch.

                                      Comment

                                      • cyberhack
                                        Badcaps Veteran
                                        • Feb 2013
                                        • 466
                                        • Uk

                                        #20
                                        Re: sony vaio PCG-7141L NO POWER

                                        Convert a pc power supply to use .
                                        http://makezine.com/projects/compute...upply-adapter/
                                        https://www.youtube.com/watch?v=z2oSFpKh_Uw

                                        Comment

                                        Related Topics

                                        Collapse

                                        • Document Archive
                                          Sony VAIO SVF11N1L2E Hybrid (2-in-1) Fit multi-flip Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Sony VAIO SVF11N1L2E Hybrid (2-in-1) can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the SVF11N1L2E boardview and SVF11N1L2E schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
                                          09-06-2024, 05:27 AM
                                        • Document Archive
                                          Sony VAIO VGN-FZ31J FZ Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Sony VAIO VGN-FZ31J can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the VGN-FZ31J boardview and VGN-FZ31J schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Sony VAIO VGN-FZ31J...
                                          09-06-2024, 05:27 AM
                                        • Document Archive
                                          Sony VAIO VPCM12M1E/W Netbook Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Sony VAIO VPCM12M1E/W Netbook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the VAIO VPCM12M1E/W boardview and VAIO VPCM12M1E/W schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
                                          09-06-2024, 05:27 AM
                                        • Document Archive
                                          Sony VAIO SVT1122I4E Hybrid (2-in-1) Tap 11 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Sony VAIO SVT1122I4E Hybrid (2-in-1) can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the SVT1122I4E boardview and SVT1122I4E schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
                                          09-06-2024, 05:27 AM
                                        • Carlos#2003%
                                          Schematic de una Sony VAIO PCG-41217u, Sony VPCSB45FL (MBX-237), 1p-0117j01-a012 mbx-237.
                                          by Carlos#2003%
                                          Buenas mi nombre es carlos me uni al foro porque estoy buscando el schematic de una sony vaio pcg-41217u otras formas de escribirlo son 1p-0117j01-a012 mbx-237 numero de placa revision 1.2 o Sony VPCSB (MBX-237), en fin me gustaria y ayudaria un monton si alguien me puede dar dichi svhematic para hacer las mediciones de una laptop de la mencionada anteriormente(Sony VAIO PCG-41217U) con el fin de repararla dejo de funcionar solo prende el led de la bateria al pulsar el boton de power el disco empiesa a hacer ruido de actividad pero los leds del frontas no reflejan acividad y no enciende la pantalla....
                                          02-15-2024, 07:52 PM
                                        • Loading...
                                        • No more items.
                                        Working...