Question about finding short using dc power supply

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  • Stevie2001
    Senior Member
    • Apr 2018
    • 183
    • irland

    #1

    Question about finding short using dc power supply

    Can you tell me if am doing it right.

    The voltage is 5v 2amp output from specs.

    I have a tab that has green light on but don't turn on due to battery not charging so i setted on dc power supply to 5v max 2amps and connected the gnd to ground and red to + of the battery on the pcb board(battery disconnected) now when i turn the dc power supply on i can se voltage drop and current increase and i feel parts heating up.

    The part that is heating up is that the main issue to whole problem if i changed that will it fix it.

    Am still learning everybody has without learning we wont know right thanks.
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: Question about finding short using dc power supply

    yes, you are on the right track. Whether replacing the hot pars will solve it or not-that you can verify once you replace the parts. There can be multiple parts which might have failed.

    Comment

    • Stevie2001
      Senior Member
      • Apr 2018
      • 183
      • irland

      #3
      Re: Question about finding short using dc power supply

      Originally posted by mcplslg123
      yes, you are on the right track. Whether replacing the hot pars will solve it or not-that you can verify once you replace the parts. There can be multiple parts which might have failed.
      Thanks also can you help me understand how to order parts do i need to check the value text on ic then order the same one or will any ic number work as long it has same design x legs ?

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: Question about finding short using dc power supply

        Why start a new thread rather than continue your original one ?

        Comment

        • Stevie2001
          Senior Member
          • Apr 2018
          • 183
          • irland

          #5
          Re: Question about finding short using dc power supply

          Originally posted by diif
          Why start a new thread rather than continue your original one ?
          Different topic about how to and get confermation and opinions sir

          Comment

          • diif
            Badcaps Legend
            • Feb 2014
            • 6978
            • England

            #6
            Re: Question about finding short using dc power supply

            How is "Question about finding short using dc power supply" different from "Use dc power supply to find short heated meathod?" ?

            It's the same tablet also too I'm guessing. Why not show the area where the ic was removed to help identify it.

            Comment

            • vinceroger69
              Badcaps Legend
              • Mar 2012
              • 6714
              • uk

              #7
              Re: Question about finding short using dc power supply

              Originally posted by Steve22
              Thanks also can you help me understand how to order parts do i need to check the value text on ic then order the same one or will any ic number work as long it has same design x legs ?
              for ordering parts always try and order what the part number is on the old ic etc, you cant use any ic just because it fits, if your not sure post the part details with a picture then usually we can then help you source a new part.

              Comment

              • Stevie2001
                Senior Member
                • Apr 2018
                • 183
                • irland

                #8
                Re: Question about finding short using dc power supply

                Originally posted by vinceroger69
                for ordering parts always try and order what the part number is on the old ic etc, you cant use any ic just because it fits, if your not sure post the part details with a picture then usually we can then help you source a new part.
                Thank you so much.

                To other replies guys its a new tab am working on so this is why i had to make new thread but i still apologise.

                Comment

                • Stevie2001
                  Senior Member
                  • Apr 2018
                  • 183
                  • irland

                  #9
                  Re: Question about finding short using dc power supply

                  I have de-solder station was wondering what is the best way to take this off without damaging components as it is soldered all sides.
                  Attached Files

                  Comment

                  • vinceroger69
                    Badcaps Legend
                    • Mar 2012
                    • 6714
                    • uk

                    #10
                    Re: Question about finding short using dc power supply

                    what part is it your trying too remove? the heat shield or one of the ports etc

                    Comment

                    • Stevie2001
                      Senior Member
                      • Apr 2018
                      • 183
                      • irland

                      #11
                      Re: Question about finding short using dc power supply

                      Originally posted by vinceroger69
                      what part is it your trying too remove? the heat shield or one of the ports etc
                      I tool the shield of i noticed the port is defect and may need a replacement can you help find this part
                      Attached Files

                      Comment

                      • vinceroger69
                        Badcaps Legend
                        • Mar 2012
                        • 6714
                        • uk

                        #12
                        Re: Question about finding short using dc power supply

                        what make/model is the tablet i would search on https://www.aliexpress.com/?spm=a2g0...00002.1.cZwafk
                        you mayfind something oh theire

                        Comment

                        • Stevie2001
                          Senior Member
                          • Apr 2018
                          • 183
                          • irland

                          #13
                          Re: Question about finding short using dc power supply

                          Originally posted by vinceroger69
                          what make/model is the tablet i would search on https://www.aliexpress.com/?spm=a2g0...00002.1.cZwafk
                          you mayfind something oh theire
                          Archos 101 internet tablet

                          Comment

                          • Stevie2001
                            Senior Member
                            • Apr 2018
                            • 183
                            • irland

                            #14
                            Re: Question about finding short using dc power supply

                            Is that it
                            https://m.ebay.com/itm/5pc-40-Pin-FP...wAAOSwstxVUjc0

                            Comment

                            • vinceroger69
                              Badcaps Legend
                              • Mar 2012
                              • 6714
                              • uk

                              #15
                              Re: Question about finding short using dc power supply

                              Originally posted by Steve22
                              no dose not look like it as the center ridge bit is missing

                              Comment

                              • Stevie2001
                                Senior Member
                                • Apr 2018
                                • 183
                                • irland

                                #16
                                Re: Question about finding short using dc power supply

                                Originally posted by vinceroger69
                                no dose not look like it as the center ridge bit is missing
                                Am looking for it on ebay as i dont use ali express takes long time delivery. Plz help ebay

                                Comment

                                • vinceroger69
                                  Badcaps Legend
                                  • Mar 2012
                                  • 6714
                                  • uk

                                  #17
                                  Re: Question about finding short using dc power supply

                                  ebay does not sell all items especially parts like this hence me saying try aliexpress lately parts are taking just over two weeks to arrive from them.

                                  Comment

                                  • Stevie2001
                                    Senior Member
                                    • Apr 2018
                                    • 183
                                    • irland

                                    #18
                                    Re: Question about finding short using dc power supply

                                    Originally posted by vinceroger69
                                    ebay does not sell all items especially parts like this hence me saying try aliexpress lately parts are taking just over two weeks to arrive from them.
                                    Ok np please find 2 things for me on ali express.

                                    92
                                    201rt2 or 20irt2 h114cm ic
                                    And that fpc connector
                                    Attached Files
                                    Last edited by Stevie2001; 04-27-2018, 12:01 PM.

                                    Comment

                                    • vinceroger69
                                      Badcaps Legend
                                      • Mar 2012
                                      • 6714
                                      • uk

                                      #19
                                      Re: Question about finding short using dc power supply

                                      maybe offer this seller a lower offer this will be ideal for all the spares you need
                                      https://www.ebay.co.uk/itm/Archos-10...8AAOSwPypaXz1E

                                      Comment

                                      • Stevie2001
                                        Senior Member
                                        • Apr 2018
                                        • 183
                                        • irland

                                        #20
                                        Re: Question about finding short using dc power supply

                                        parts cant be found which really sucks only the ic and port would have cost less
                                        Last edited by Stevie2001; 04-27-2018, 01:01 PM.

                                        Comment

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