Acer a315-25-95kf

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • String2016
    Badcaps Legend
    • Nov 2015
    • 2230
    • philippines

    #1

    Acer a315-25-95kf

    I need help on this acer a315 DA0ZASMB8D0 REV.The problem with this one it came to me as no display, so i open the laptop and find out burnt mosfet near processor area AO6414A so i replaced the mosfet with new one now no lghts i removed the mosfet and check outside it became short, so I checked the pads , i noticed the gate is shorted to ground,anyone can help me on this please, i have attached schematic and pic on the location of the mosfet the mark read is the gate shorted
    Attached Files
  • String2016
    Badcaps Legend
    • Nov 2015
    • 2230
    • philippines

    #2
    Re: Acer a315-25-95kf

    anyone please help already done cleaning but still source and gate are still shorts beeping to ground
    Attached Files

    Comment

    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india

      #3
      Re: Acer a315-25-95kf

      Why not remove the PWM connected to this mosfet and check again??

      Comment

      • String2016
        Badcaps Legend
        • Nov 2015
        • 2230
        • philippines

        #4
        Re: Acer a315-25-95kf

        @mcplslg123 thanks for the response I remove one side of coil R22 connected to gate and the gate is not beeping to the ground anymore,but source and gate are beeping, any help on this please

        Comment

        • String2016
          Badcaps Legend
          • Nov 2015
          • 2230
          • philippines

          #5
          Re: Acer a315-25-95kf

          anyone can help please

          Comment

          • String2016
            Badcaps Legend
            • Nov 2015
            • 2230
            • philippines

            #6
            Re: Acer a315-25-95kf

            any help please

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 14038
              • Canada

              #7
              Re: Acer a315-25-95kf

              Hi. If you suspect a mosfet, check the resistance.

              Remove all power. Meter in resistance mode (2k).

              Measure :

              Source (1-2-3) and drain (5-6-7-8)
              Source and gate (4)
              Gate and drain

              Post the measurements. Checking for low resistance values = defective mosfet.

              Comment

              • String2016
                Badcaps Legend
                • Nov 2015
                • 2230
                • philippines

                #8
                Re: Acer a315-25-95kf

                the burnt mosfet removed measure the shorted gate 0.016k , s= 0.003k and drain ol

                Comment

                • mon2
                  Badcaps Legend
                  • Dec 2019
                  • 14038
                  • Canada

                  #9
                  Re: Acer a315-25-95kf

                  Can you provide details of which mosfet you are referring to in the schematic?

                  These are cpu power rails which are normally low resistance rails.

                  Does your meter have a lower as resistance scale? Use it for these checks. It appears you have 3 ohms to ground which may be too low and be considered a shorted CPU but wait on other replies to this thread.

                  Review this webpage on topic:

                  https://logi.wiki/index.php/Resistance_to_Ground_List

                  Comment

                  • String2016
                    Badcaps Legend
                    • Nov 2015
                    • 2230
                    • philippines

                    #10
                    Re: Acer a315-25-95kf

                    the mosfet above pic burnt is AO6414A connected to R22 COIL my meter is fluke 15b+ i set to manual to kohms

                    Comment

                    • String2016
                      Badcaps Legend
                      • Nov 2015
                      • 2230
                      • philippines

                      #11
                      Re: Acer a315-25-95kf

                      I dont know which side on the schematic because there is no written name on the board and i cannot find a board view on this

                      Comment

                      • String2016
                        Badcaps Legend
                        • Nov 2015
                        • 2230
                        • philippines

                        #12
                        Re: Acer a315-25-95kf

                        anyone please help

                        Comment

                        • SMDFlea
                          Super Moderator
                          • Jan 2018
                          • 20731
                          • UK

                          #13
                          Re: Acer a315-25-95kf

                          Look for the PU2 RT3662ACGQW controller and check which pin the AO6414A gate is connected to.Don`t apply any power to the board.
                          Last edited by SMDFlea; 03-18-2022, 04:28 AM.
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                          Comment

                          • String2016
                            Badcaps Legend
                            • Nov 2015
                            • 2230
                            • philippines

                            #14
                            Re: Acer a315-25-95kf

                            @smdflea thanks for the response the gate of the burnt mosfet removed A06414A Gate connected to RT3662ACGQW BEL0W

                            PIN4
                            PIN8
                            PIN10
                            PIN22
                            PIN24
                            PIN32
                            PIN36
                            PIN37
                            PIN38

                            ALL of them beeping on shorted gate of ao6414a

                            Comment

                            • String2016
                              Badcaps Legend
                              • Nov 2015
                              • 2230
                              • philippines

                              #15
                              Re: Acer a315-25-95kf

                              i noticed this pc27 both beeping to ground that is connected and beeping on pin 36-38 of RT3662ACGQW

                              Comment

                              • String2016
                                Badcaps Legend
                                • Nov 2015
                                • 2230
                                • philippines

                                #16
                                Re: Acer a315-25-95kf

                                tried removing it but still gate is beeping on the ground

                                Comment

                                • mielta
                                  Badcaps Veteran
                                  • Apr 2015
                                  • 368
                                  • Germany

                                  #17
                                  Re: Acer a315-25-95kf

                                  Hi
                                  Remove PU2 and mesure again

                                  Comment

                                  • String2016
                                    Badcaps Legend
                                    • Nov 2015
                                    • 2230
                                    • philippines

                                    #18
                                    Re: Acer a315-25-95kf

                                    @mielta thanks for the response you mean RT3662ACGQW?is there a chance this bad?

                                    Comment

                                    • mielta
                                      Badcaps Veteran
                                      • Apr 2015
                                      • 368
                                      • Germany

                                      #19
                                      Re: Acer a315-25-95kf

                                      I Think so

                                      Comment

                                      • String2016
                                        Badcaps Legend
                                        • Nov 2015
                                        • 2230
                                        • philippines

                                        #20
                                        Re: Acer a315-25-95kf

                                        UPDATE: remove RT3662ACGQW the short is gone on the gate of 6414A

                                        Comment

                                        Related Topics

                                        Collapse

                                        • ipn00tic
                                          Acer vx5-591G I removed Mosfet and it works without it?! could it cause problem?
                                          by ipn00tic
                                          Hello everybody,

                                          I'm learning alone at home (with you) of course.

                                          I have an Acer VX5-591G laptop that was given to me as scrap where I was training and diagnosing.

                                          The Laptop turns on and starts to boot for a few seconds but before displaying any image it short circuits the main 19V power supply and turns off.

                                          I managed to "repair" the laptop and it turns on and everything works, I even did game tests for the CPU and GPU and everything works but what I did was remove a Mosfet (PQ807) from the VCC_GT power supply.
                                          The VCC_GT power...
                                          03-01-2024, 05:32 AM
                                        • jermac0711
                                          ACER PEW71 LA-5894P CPU_B+ MOSFET NEED HEPL
                                          by jermac0711
                                          Brand : Acer
                                          MOBO: PEW71 LA-5894P
                                          Issue: initially no power. PQ73 mosfet is busted. (AO4466) . Unit has power now but PQ87 is heating up too much (observerd under thermal camera) causing to shut down the system. I tried to remove the removable CPU and the mosfet temperature went normal. I have a replacement CPU from same model but everytime there's a CPU, mosfet PQ87 temperature is rising rapidly.
                                          I hope you guys can shed some light. Thank you so much in advance.
                                          12-17-2024, 08:25 PM
                                        • Document Archive
                                          Acer Aspire Aspire 9920 G-933G64HN Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Acer Aspire Aspire 9920 G-933G64HN 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 Aspire 9920 G-933G64HN boardview and Aspire 9920 G-933G64HN 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,...
                                          09-06-2024, 05:27 AM
                                        • Document Archive
                                          Acer Aspire Acer Aspire 7 Charcoal Black Notebook 7 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Acer Aspire Acer Aspire 7 Charcoal Black Notebook 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 Acer Aspire 7 Charcoal Black boardview and Acer Aspire 7 Charcoal Black 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...
                                          09-07-2024, 05:00 AM
                                        • Document Archive
                                          Acer Swift Acer Swift 3 Ultraschlankes Notebook Notebook 3 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the Acer Swift Acer Swift 3 Ultraschlankes Notebook Notebook 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 Acer Swift 3 Ultraschlankes Notebook boardview and Acer Swift 3 Ultraschlankes Notebook 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...
                                          09-07-2024, 05:00 AM
                                        • Loading...
                                        • No more items.
                                        Working...