Dell 1504FP Monitor Year of Manufacture 2002

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  • matthmal
    Badcaps Veteran
    • Nov 2012
    • 306
    • Malta

    #21
    Re: Dell 1504FP Monitor Year of Manufacture 2002

    Tranformer 2 Test:

    Pin 1 to Pin 2 -> 1
    Pin 1 to Pin 3 -> 785
    Pin 1 to Pin 4 -> 1
    Pin 1 to Pin 5 -> 1
    Pin 1 to Pin 6 -> 1
    Pin 1 to Pin 7 -> 1
    Pin 1 to Pin 8 -> 1
    Pin 1 to Pin 9 -> 1
    Pin 1 to Pin 10 -> 1
    Pin 2 to Pin 3 -> 1
    Pin 2 to Pin 4 -> 1
    Pin 2 to Pin 5 -> 1
    Pin 2 to Pin 6 -> 1
    Pin 2 to Pin 7 -> 1
    Pin 2 to Pin 8 -> 1
    Pin 2 to Pin 9 -> 1
    Pin 2 to Pin 10 -> 1
    Pin 3 to Pin 4 -> 1
    Pin 3 to Pin 5 -> 1
    Pin 3 to Pin 6 -> 1
    Pin 3 to Pin 7 -> 1
    Pin 3 to Pin 8 -> 1
    Pin 3 to Pin 9 -> 1
    Pin 3 to Pin 10 -> 1
    Pin 4 to Pin 5 -> 544
    Pin 4 to Pin 6 -> 545
    Pin 4 to Pin 7 -> 544
    Pin 4 to Pin 8 -> 544
    Pin 4 to Pin 9 -> 000
    Pin 4 to Pin 10 -> 1
    Pin 5 to Pin 6 -> 000
    Pin 5 to Pin 7 -> 000
    Pin 5 to Pin 8 -> 000
    Pin 5 to Pin 9 -> 537
    Pin 5 to Pin 10 -> 1
    Pin 6 to Pin 7 -> 000
    Pin 6 to Pin 8 -> 000
    Pin 6 to Pin 9 -> 537
    Pin 6 to Pin 10 -> 1
    Pin 7 to Pin 8 -> 000
    Pin 7 to Pin 9 -> 537
    Pin 7 to Pin 10 -> 1
    Pin 8 to Pin 9 -> 537
    Pin 8 to Pin 10 -> 1
    Pin 9 to Pin 10 -> 1

    Comment

    • selldoor
      Slow Learner
      • Dec 2010
      • 7870

      #22
      Re: Dell 1504FP Monitor Year of Manufacture 2002

      Great - wish I hadnt asked!! On the second transformer just measure the ones that T1 has a voltage ie not o or 1
      Please upload pictures using attachment function when ask for help on the repair
      http://www.badcaps.net/forum/showthread.php?t=39740

      Comment

      • matthmal
        Badcaps Veteran
        • Nov 2012
        • 306
        • Malta

        #23
        Re: Dell 1504FP Monitor Year of Manufacture 2002

        already did and posted results my friend for both transformers.

        Here are the results of post 12 (VDC200, POWER ON):
        Pin 1 -> 0.01
        Pin 2 -> 0.01
        Pin 3 -> 0.01
        Pin 4 -> 0.01
        Pin 5 -> 0.01
        Pin 6 -> 0.00
        Pin 7 -> 2.2
        Pin 8 -> 2.4
        Pin 9 -> 2.5
        Pin 10 -> 2.8
        Pin 11 -> 2.9
        Pin 12 -> 2.5

        Comment

        • selldoor
          Slow Learner
          • Dec 2010
          • 7870

          #24
          Re: Dell 1504FP Monitor Year of Manufacture 2002

          So you did - pity its gone onto the next page. -I will look at the numbers tomorrow
          Voltages are terrible - was there no clue as to what they should be Pson Dim Bl 5v 12v etc If there are can you edit your post and put those descriptions in.
          I am off to bed
          Please upload pictures using attachment function when ask for help on the repair
          http://www.badcaps.net/forum/showthread.php?t=39740

          Comment

          • matthmal
            Badcaps Veteran
            • Nov 2012
            • 306
            • Malta

            #25
            Re: Dell 1504FP Monitor Year of Manufacture 2002

            i will look at it tomorrow and post to you back

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #26
              Re: Dell 1504FP Monitor Year of Manufacture 2002

              Transformers look ok ( Some good at last)
              Attached Files
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • selldoor
                Slow Learner
                • Dec 2010
                • 7870

                #27
                Re: Dell 1504FP Monitor Year of Manufacture 2002

                What are the part numbers on these components.


                I think the next step would have to be changing out all the caps on the 2 boards.
                If you have a 50v 1uf start with that one on the power board.
                Attached Files
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • matthmal
                  Badcaps Veteran
                  • Nov 2012
                  • 306
                  • Malta

                  #28
                  Re: Dell 1504FP Monitor Year of Manufacture 2002

                  Can the 50v 1uF be changed with something with bigger resistance ? As I don't have one available to just change it.

                  Model numbers coming soon...
                  Last edited by matthmal; 12-05-2012, 03:34 PM.

                  Comment

                  • matthmal
                    Badcaps Veteran
                    • Nov 2012
                    • 306
                    • Malta

                    #29
                    Re: Dell 1504FP Monitor Year of Manufacture 2002

                    Voltage Regulator 1 Model Number:

                    7805C
                    NLEV237

                    Voltage Regulator 2 Model Number:

                    BA033
                    26 96

                    Voltage Regulator 3 Model Number:

                    26AJ
                    LBBB

                    I could hardly see them as they are really small

                    Comment

                    • selldoor
                      Slow Learner
                      • Dec 2010
                      • 7870

                      #30
                      Re: Dell 1504FP Monitor Year of Manufacture 2002

                      Originally posted by matthmal
                      Can the 50v 1uF be changed with something with bigger resistance ? As I don't have one available to just change it.

                      Model numbers coming soon...
                      You mean bigger capacitance 50v10uf 50v 47 uf 25v 1 uf 10uf 47uf

                      would be ok what have you got?
                      Please upload pictures using attachment function when ask for help on the repair
                      http://www.badcaps.net/forum/showthread.php?t=39740

                      Comment

                      • matthmal
                        Badcaps Veteran
                        • Nov 2012
                        • 306
                        • Malta

                        #31
                        Re: Dell 1504FP Monitor Year of Manufacture 2002

                        i do have these:
                        50v 47uF
                        25v 220uF
                        16v 470uF
                        25V 470uF
                        16V 1000uF

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #32
                          Re: Dell 1504FP Monitor Year of Manufacture 2002

                          Originally posted by matthmal
                          Voltage Regulator 1 Model Number:

                          7805C
                          NLEV237

                          Voltage Regulator 2 Model Number:

                          BA033
                          26 96

                          Voltage Regulator 3 Model Number:

                          26AJ
                          LBBB

                          I could hardly see them as they are really small
                          Ok First two are Voltage Regulators 7805 is 5v and bao33 is 3.3

                          I cant find the last one - check again with magnifying glass? Try cleaning it.

                          Test the first two

                          https://www.badcaps.net/forum/showthread.php?p=261329
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • selldoor
                            Slow Learner
                            • Dec 2010
                            • 7870

                            #33
                            Re: Dell 1504FP Monitor Year of Manufacture 2002

                            Originally posted by matthmal
                            i do have these:
                            50v 47uF
                            25v 220uF
                            16v 470uF
                            25V 470uF
                            16V 1000uF

                            Try the 50v 47uf - ok for test purposes
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                            • matthmal
                              Badcaps Veteran
                              • Nov 2012
                              • 306
                              • Malta

                              #34
                              Re: Dell 1504FP Monitor Year of Manufacture 2002

                              will do and post back

                              Comment

                              • matthmal
                                Badcaps Veteran
                                • Nov 2012
                                • 306
                                • Malta

                                #35
                                Re: Dell 1504FP Monitor Year of Manufacture 2002

                                sorry for the late reply but was a bit busy...

                                I changed the cap and done the tests.

                                Voltage regulator BAO333 Test:
                                Pin 1 -> 0.01
                                Pin 2 -> 0.00
                                Pin 3 -> 0.01

                                Voltage regulator 7805C Test:
                                Pin 1 -> 0.01
                                Pin 2 -> 0.00
                                Pin 3 -> 0.01

                                Voltage regulator 26AJ Test:
                                Pin 1 -> 0.01
                                Pin 2 -> 0.01
                                Pin 3 -> 0.01
                                Pin 4 -> 0.01

                                Note: That I did check it with a magnifying glass and it was correct.

                                Comment

                                • selldoor
                                  Slow Learner
                                  • Dec 2010
                                  • 7870

                                  #36
                                  Re: Dell 1504FP Monitor Year of Manufacture 2002

                                  That test is with it all connected and switched on and meter on VDC20?
                                  Please upload pictures using attachment function when ask for help on the repair
                                  http://www.badcaps.net/forum/showthread.php?t=39740

                                  Comment

                                  • selldoor
                                    Slow Learner
                                    • Dec 2010
                                    • 7870

                                    #37
                                    Re: Dell 1504FP Monitor Year of Manufacture 2002

                                    Originally posted by matthmal
                                    already did and posted results my friend for both transformers.

                                    Here are the results of post 12 (VDC200, POWER ON):
                                    Pin 1 -> 0.01
                                    Pin 2 -> 0.01
                                    Pin 3 -> 0.01
                                    Pin 4 -> 0.01
                                    Pin 5 -> 0.01
                                    Pin 6 -> 0.00
                                    Pin 7 -> 2.2
                                    Pin 8 -> 2.4
                                    Pin 9 -> 2.5
                                    Pin 10 -> 2.8
                                    Pin 11 -> 2.9
                                    Pin 12 -> 2.5

                                    Hmm I think you have measured the wrong connector It only has 7 pins.
                                    see pic in post12
                                    Please upload pictures using attachment function when ask for help on the repair
                                    http://www.badcaps.net/forum/showthread.php?t=39740

                                    Comment

                                    • matthmal
                                      Badcaps Veteran
                                      • Nov 2012
                                      • 306
                                      • Malta

                                      #38
                                      Re: Dell 1504FP Monitor Year of Manufacture 2002

                                      Ok so I tested the connectors from the back of the board as I didn't manage to remove the connector.

                                      POWER ON, VDC200:

                                      Pin 1 -> 0.01
                                      Pin 2 -> 0.02
                                      Pin 3 -> 0.02
                                      Pin 4 -> 0.01
                                      Pin 5 -> 0.02
                                      Pin 6 -> 0.01
                                      Pin 7 -> 0.02

                                      POWER ON, VDC20:

                                      Pin 1 -> 2.76
                                      Pin 2 -> 3.9
                                      Pin 3 -> 3.46
                                      Pin 4 -> 3.58
                                      Pin 5 -> 4.41
                                      Pin 6 -> 4.15
                                      Pin 7 -> 2.89

                                      Please note that these are not still readings, they go up and down but this I noted the highest reading
                                      Last edited by matthmal; 12-09-2012, 04:04 AM.

                                      Comment

                                      • matthmal
                                        Badcaps Veteran
                                        • Nov 2012
                                        • 306
                                        • Malta

                                        #39
                                        Re: Dell 1504FP Monitor Year of Manufacture 2002

                                        Originally posted by selldoor
                                        That test is with it all connected and switched on and meter on VDC20?
                                        The tests were with meter on VDC200.

                                        Here are the tests with the meter VDC20:

                                        Voltage regulator BAO333 Test:
                                        Pin 1 -> 0.77
                                        Pin 2 -> 0.00
                                        Pin 3 -> 0.30

                                        Voltage regulator 7805C Test:
                                        Pin 1 -> 0.81
                                        Pin 2 -> 0.81
                                        Pin 3 -> 0.81

                                        Voltage regulator 26AJ Test:
                                        Pin 1 -> 0.53
                                        Pin 2 -> 0.36
                                        Pin 3 -> 0.43
                                        Pin 4 -> 0.28

                                        Please note that these are not still readings, they go up and down but this I noted the highest reading

                                        Comment

                                        • selldoor
                                          Slow Learner
                                          • Dec 2010
                                          • 7870

                                          #40
                                          Re: Dell 1504FP Monitor Year of Manufacture 2002

                                          Here is an interesting thread - your Fet whilst not yellowed has a lot of glue on it - clean it off remove test and replace. See also the hairdryer trick - warm those 6 capxon caps
                                          and A) see if it comes on and B) retest the voltages. Next would be assume the caps are bad and replace. This is often the first thing to do wwith Capxon.

                                          https://www.badcaps.net/forum/showth...ghlight=1504FP
                                          Please upload pictures using attachment function when ask for help on the repair
                                          http://www.badcaps.net/forum/showthread.php?t=39740

                                          Comment

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