ACER ASPIRE 5733 Voltage flactuating

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

    #1

    ACER ASPIRE 5733 Voltage flactuating

    Hi friends, I need help on this ACER Aspire 5733 LA-6582P PEW71.The problem with this is dead laptop when i check in bench lab it shows from 100miliams to 200 then goes down fluctuating.When i check on the dc in 19v ok and on the first switching mosfet PQ59 both sides have 19v but on the second mosfet PQ52 source side ok have 19v but on the other side which is drain voltage flactuate from 15v drom to 11v then goes to 15 and dropping,the same also on the resistor PR351 with a mark R020 both sides voltage flactuating from 15v to 11v. Anyone can help me please need advise on this please
  • SMDFlea
    Super Moderator
    • Jan 2018
    • 20695
    • UK

    #2
    Re: ACER ASPIRE 5733 Voltage flactuating

    change PQ52
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

    • String2016
      Badcaps Legend
      • Nov 2015
      • 2230
      • philippines

      #3
      Re: ACER ASPIRE 5733 Voltage flactuating

      replaced pq52 same value mosfet but still the same on the 4pins drain side fluctuating voltage.anyone please help on this

      Comment

      • String2016
        Badcaps Legend
        • Nov 2015
        • 2230
        • philippines

        #4
        Re: ACER ASPIRE 5733 Voltage flactuating

        i think i found the problem its U17 the isl chip is shorted ill try to replaced and feedback soon

        Comment

        • String2016
          Badcaps Legend
          • Nov 2015
          • 2230
          • philippines

          #5
          Re: ACER ASPIRE 5733 Voltage flactuating

          still the same issue i replace isl U17 and tried again still the same issue voltage flatuate on PQ52 drain side.anyone can help me on this please

          Comment

          • String2016
            Badcaps Legend
            • Nov 2015
            • 2230
            • philippines

            #6
            Re: ACER ASPIRE 5733 Voltage flactuating

            i change pq59 first mosfet i turns on then after i unplugged the charger it comes back to the same issue fluctuating voltage on pq52 can anyone please help me on this please

            Comment

            • mielta
              Badcaps Veteran
              • Apr 2015
              • 368
              • Germany

              #7
              Re: ACER ASPIRE 5733 Voltage flactuating

              Hi
              Remove PR351 and check voltage
              when it is stable you have an problem on B+
              when not check PC248 + PC249

              Comment

              • String2016
                Badcaps Legend
                • Nov 2015
                • 2230
                • philippines

                #8
                Re: ACER ASPIRE 5733 Voltage flactuating

                I removed pr351 still the same problem fluctuating i checked pc248 and 249 caps no short

                Comment

                • SMDFlea
                  Super Moderator
                  • Jan 2018
                  • 20695
                  • UK

                  #9
                  Re: ACER ASPIRE 5733 Voltage flactuating

                  Can you check PQ59 and PQ65
                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                  Comment

                  • mielta
                    Badcaps Veteran
                    • Apr 2015
                    • 368
                    • Germany

                    #10
                    Re: ACER ASPIRE 5733 Voltage flactuating

                    Change or remove to test PC248 and PC249
                    you cannot messure that issue

                    Comment

                    • String2016
                      Badcaps Legend
                      • Nov 2015
                      • 2230
                      • philippines

                      #11
                      Re: ACER ASPIRE 5733 Voltage flactuating

                      Check pq59 voltages fluctuating on pin2 and 3. Done test pc248 and pc249 by removing from the board the ceramic caps are not shorted

                      Comment

                      • mielta
                        Badcaps Veteran
                        • Apr 2015
                        • 368
                        • Germany

                        #12
                        Re: ACER ASPIRE 5733 Voltage flactuating

                        have you checked without PC248/249 ??

                        Comment

                        • mielta
                          Badcaps Veteran
                          • Apr 2015
                          • 368
                          • Germany

                          #13
                          Re: ACER ASPIRE 5733 Voltage flactuating

                          desolder PQ65 an check fluctuating
                          and Messure resistance from PR353-354-361-371 are OK?
                          Last edited by mielta; 05-25-2018, 09:21 AM.

                          Comment

                          • String2016
                            Badcaps Legend
                            • Nov 2015
                            • 2230
                            • philippines

                            #14
                            Re: ACER ASPIRE 5733 Voltage flactuating

                            you mean i will removed pc248 and 249 and checked pq59?

                            Comment

                            • String2016
                              Badcaps Legend
                              • Nov 2015
                              • 2230
                              • philippines

                              #15
                              Re: ACER ASPIRE 5733 Voltage flactuating

                              i removed pq65 and checked still fluctuating voltages i cannot find the resistor PR353-354-361-371

                              Comment

                              • mielta
                                Badcaps Veteran
                                • Apr 2015
                                • 368
                                • Germany

                                #16
                                Re: ACER ASPIRE 5733 Voltage flactuating

                                yes remove PC248 and 249 and check flucation

                                Comment

                                • mielta
                                  Badcaps Veteran
                                  • Apr 2015
                                  • 368
                                  • Germany

                                  #17
                                  Re: ACER ASPIRE 5733 Voltage flactuating

                                  PR353
                                  PR354
                                  PR361
                                  PR371
                                  see in schematics where the are

                                  Comment

                                  • String2016
                                    Badcaps Legend
                                    • Nov 2015
                                    • 2230
                                    • philippines

                                    #18
                                    Re: ACER ASPIRE 5733 Voltage flactuating

                                    done test removing PC248 AND 249 and checked still voltage fluctuating. i have to find now where is PR353
                                    PR354
                                    PR361
                                    PR371 and already checked the schematics but i cannot find on the board i will check again

                                    Comment

                                    • SMDFlea
                                      Super Moderator
                                      • Jan 2018
                                      • 20695
                                      • UK

                                      #19
                                      Re: ACER ASPIRE 5733 Voltage flactuating

                                      Originally posted by String2016
                                      I removed pr351 still the same problem fluctuating i checked pc248 and 249 caps no short
                                      Which side of PR351 did you test , pins1+2 or 3+4 .
                                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                      Comment

                                      • Stevie2001
                                        Senior Member
                                        • Apr 2018
                                        • 183
                                        • irland

                                        #20
                                        Re: ACER ASPIRE 5733 Voltage flactuating

                                        Originally posted by String2016
                                        still the same issue i replace isl U17 and tried again still the same issue voltage flatuate on PQ52 drain side.anyone can help me on this please
                                        I noticed isl chip board give this common issue.
                                        Isl chip has 1pin gnd rest of the pin is not gnd do this get multi-meter put on continutiy mode and put black on gnd and swipe the red accross all pin of isl pins ignoring the gnd pin se if any pins beep if they do beep investigate from their were beep coming from track it.

                                        Make sure no power is on.

                                        Check isl datasheet for pin layout output.
                                        Last edited by Stevie2001; 05-26-2018, 03:07 PM.

                                        Comment

                                        Related Topics

                                        Collapse

                                        • Document Archive
                                          ACER Aspire Aspire E560 Aspire E6400 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ACER Aspire Aspire E560 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Aspire Aspire E560 boardview and Aspire Aspire E560 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...
                                          09-12-2024, 03:28 PM
                                        • Document Archive
                                          ACER Aspire Aspire E700 Aspire E6300 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ACER Aspire Aspire E700 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Aspire Aspire E700 boardview and Aspire Aspire E700 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...
                                          09-12-2024, 02:30 PM
                                        • Document Archive
                                          ACER Aspire Aspire M7711 Aspire Q9300 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ACER Aspire Aspire M7711 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Aspire Aspire M7711 boardview and Aspire Aspire M7711 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...
                                          09-12-2024, 03:28 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 Aspire M7200 Aspire 805 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ACER Aspire Aspire M7200 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Aspire Aspire M7200 boardview and Aspire Aspire M7200 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...
                                          09-12-2024, 03:28 PM
                                        • Loading...
                                        • No more items.
                                        Working...