Bad caps in ViewSonic VP930b?

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  • Pico
    Member
    • Jul 2008
    • 13
    #1

    Bad caps in ViewSonic VP930b?

    I have an LCD whose power will not turn on. There is a cricket sound coming from the transformer on the power supply.

    I attached two images of the caps on the board, they are made by CapXon

    I apologize for the blurry pictures, I can take better pictures if needed.

    Info on the caps

    First Image:

    100uF 400v


    Second Image:

    As seen in the picture
    * 1
    2 3
    * 4
    5 6
    1&4 = 220uF 25v
    2&3 = 470uF 35V
    5&6 = 1000uF 16V


    Is the cricket sound caused by bad caps?

    What caps should I replace the current ones with?

    sorry for second thread, nobody was replying in the other forum
    Attached Files
    Tags: None
    • kc8adu
      Super Moderator
      • Nov 2003
      • 8829
      • U.S.A!
      #2
      Re: Bad caps in ViewSonic VP930b?

      panasonic fc is a good choice in there.
      better at taking heat than fm.

        Comment

        • Krankshaft
          Badcaps Legend
          • Jan 2007
          • 2328
          • USA
          #3
          Re: Bad caps in ViewSonic VP930b?

          No need to double post I left a reply in your first thread:

          https://www.badcaps.net/forum/showthread.php?t=5537
          Elements of the past and the future combining to make something not quite as good as either.

            Comment

            • Pico
              Member
              • Jul 2008
              • 13
              #4
              Re: Bad caps in ViewSonic VP930b?

              Originally posted by Krankshaft
              No need to double post I left a reply in your first thread:

              https://www.badcaps.net/forum/showthread.php?t=5537
              Thank you for your help. Here is the list of parts I found, how does it look?

              I could not find the 100uF 400v in the FC series..

              100uF 400v
              http://search.digikey.com/scripts/Dk...name=P13670-ND

              220uF 25v
              http://search.digikey.com/scripts/Dk...name=P10271-ND

              470uF 35V
              http://search.digikey.com/scripts/Dk...EU-FC1V471B-ND

              1000uF 16V
              http://search.digikey.com/scripts/Dk...name=P10253-ND

                Comment

                • Pico
                  Member
                  • Jul 2008
                  • 13
                  #5
                  Re: Bad caps in ViewSonic VP930b?

                  the 100uF 400v only came in bulk

                  how is this to replace it?

                  http://search.digikey.com/scripts/Dk...me=493-1234-ND

                    Comment

                    • Pico
                      Member
                      • Jul 2008
                      • 13
                      #6
                      Re: Bad caps in ViewSonic VP930b?

                      I replaced all of the caps and it works. Thank you all for your help.

                        Comment

                        • coastman49
                          New Member
                          • Nov 2010
                          • 1
                          #7
                          Re: Bad caps in ViewSonic VP930b?

                          Are these caps easy to access, since no one supplied the schematic. Or, is a schematic necessary?

                            Comment

                            • tmixer
                              New Member
                              • Jan 2011
                              • 1
                              #8
                              Re: Bad caps in ViewSonic VP930b?

                              Originally posted by Pico
                              I replaced all of the caps and it works. Thank you all for your help.
                              Can you please give me the specific links to the digikey caps and how many of each? I would greatly appreciate it - I'm going to attempt the repair.

                              Thanks

                                Comment

                                • retiredcaps
                                  Badcaps Legend
                                  • Apr 2010
                                  • 9271
                                  #9
                                  Re: Bad caps in ViewSonic VP930b?

                                  Originally posted by tmixer
                                  Can you please give me the specific links to the digikey caps and how many of each?
                                  Manufacturers sometimes make board changes so it is always best to make your own parts list. If you follow PlainBill's instructions, you can order Panasonic FM or FR caps.

                                  https://www.badcaps.net/forum/showpo...33&postcount=2
                                  --- begin sig file ---

                                  If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                                  We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                                  Please do not post inline and offsite as they slow down the loading of pages.

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