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    #1

    HP L190 monitor

    Did some searching on this monitor and noticed that there were some differences in boards. I noticed mine was different. I would like to apologize in advance for all the questions. I am definitely a newbie. I got two dead monitors and wanted to learn a new Hobie. Been reading your site for a couple weeks and decided to dive in.

    C1~25v~470uF~CapXon~Bulging
    C864~25v~470uF~CapXon~Bulging
    C862~25v~470uF~CapXon~Bulging
    C855~25v~470uF~CapXon~Bulging
    C9~25v~470uF~CapXon

    These all looked fine. Not sure what should get replaced?
    C871~16v~1000uF~CapXon
    C869~50v~470uF~Teapo
    C854~450v~100uF~Su'scon

    These are all really small caps?
    C857~16v~47uF~Su'scon
    C410~16v~47uF~Su'scon
    C805~16v~47uF~Su'scon
    C807~16v~47uF~Su'scon
    C411~16v~47uF~Su'scon
    C504~16v~47uF~Su'scon
    C501~16v~47uF~Su'scon
    C506~16v~47uF~Su'scon
    C407~16v~47uF~Su'scon
    C419~16v~47uF~Su'scon
    C803~16v~47uF~Su'scon

    I was thinking of just replacing the CapXon caps.
    Wasn't sure if I should be looking at replacing anything else? I didn't see a fuse anywhere on the board.
    Attached Files
    Tags: None
    #2
    Re: HP L190 monitor

    Originally posted by maddog2040 View Post
    These all looked fine. Not sure what should get replaced?
    C871~16v~1000uF~CapXon
    C869~50v~470uF~Teapo
    C854~450v~100uF~Su'scon
    Replace all the caps on power board side except the largest one which rarely, but not never, fails.

    Members here like Panasonic FR, FM, and FC (in that order). If you live in the USA, you can follow PlainBill's instructions on how to order from digikey.com

    https://www.badcaps.net/forum/showpo...33&postcount=2


    These are all really small caps?
    C803~16v~47uF~Su'scon
    Su'scon doesn't have the greatest reputation, but they are on the logic side of the board and don't get as much stress as the power (SMPS side). I would leave them in there.
    Last edited by retiredcaps; 03-08-2011, 08:52 PM.
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    Comment

      #3
      Re: HP L190 monitor

      Originally posted by maddog2040 View Post
      Did some searching on this monitor and noticed that there were some differences in boards. I noticed mine was different. I would like to apologize in advance for all the questions. I am definitely a newbie. I got two dead monitors and wanted to learn a new Hobie. Been reading your site for a couple weeks and decided to dive in.

      C1~25v~470uF~CapXon~Bulging
      C864~25v~470uF~CapXon~Bulging
      C862~25v~470uF~CapXon~Bulging
      C855~25v~470uF~CapXon~Bulging
      C9~25v~470uF~CapXon

      These all looked fine. Not sure what should get replaced?
      C871~16v~1000uF~CapXon
      C869~50v~470uF~Teapo
      C854~450v~100uF~Su'scon

      These are all really small caps?
      C857~16v~47uF~Su'scon
      C410~16v~47uF~Su'scon
      C805~16v~47uF~Su'scon
      C807~16v~47uF~Su'scon
      C411~16v~47uF~Su'scon
      C504~16v~47uF~Su'scon
      C501~16v~47uF~Su'scon
      C506~16v~47uF~Su'scon
      C407~16v~47uF~Su'scon
      C419~16v~47uF~Su'scon
      C803~16v~47uF~Su'scon

      I was thinking of just replacing the CapXon caps.
      Wasn't sure if I should be looking at replacing anything else? I didn't see a fuse anywhere on the board.
      Draw a line down from the 100uF, 450V Su'scon. Replace everything to the right of that (with the possible exception of the 100uF, 450V). To the left of the line I'd strongly consider replacing the cap next to the toroidal inductor, that and the IC on the heat sink are probably a buck regulator, so the cap could be seeing fairly high surge currents. As far as the 47uF, 16V caps, I wouldn't bother.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

      Comment

        #4
        Re: HP L190 monitor

        Originally posted by maddog2040 View Post
        I didn't see a fuse anywhere on the board.
        Your fuse is just below the AC plug. It is the red circle thing covered in glue. A good fuse should read less than 1.0 ohms.
        --- 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.

        --- end sig file ---

        Comment

          #5
          Re: HP L190 monitor

          Thanks RetiredCaps and PlainBill for all your help!!! I have been learning tons. So the buck regulator is used to lower the DC volatage used on the logic side of the board. Just making sure I read this right. I should replace the IC's on the heat sinks? Or just the Cap that is next to them. I noticed a couple IC's connected to heat sinks.

          Comment

            #6
            Re: HP L190 monitor

            Originally posted by maddog2040 View Post
            Thanks RetiredCaps and PlainBill for all your help!!! I have been learning tons. So the buck regulator is used to lower the DC volatage used on the logic side of the board. Just making sure I read this right. I should replace the IC's on the heat sinks? Or just the Cap that is next to them. I noticed a couple IC's connected to heat sinks.
            Sorry, rereading my post, I was unclear. I was suggesting that every electrolytic cap to the right of that line should be replaced.

            PlainBill
            For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

            Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

            Comment

              #7
              Re: HP L190 monitor

              No problem. Thanks again! Off to Digi-key.

              Comment

                #8
                Re: HP L190 monitor

                Ok dumb question. I lost my pictures for how to re-connect the wires on this thing.

                Not sure about the following? Please help.

                cn1:
                cn2:
                cn3:
                cn4:

                I am guesing it should be like this?

                If i hook this up wrong will it hurt anything?
                Attached Files

                Comment

                  #9
                  Re: HP L190 monitor

                  Originally posted by maddog2040 View Post
                  Ok dumb question. I lost my pictures for how to re-connect the wires on this thing.

                  Not sure about the following? Please help.

                  cn1:
                  cn2:
                  cn3:
                  cn4:

                  I am guesing it should be like this?

                  If i hook this up wrong will it hurt anything?
                  Been there, done that, didn't get a tee shirt but learned to mark the connectors. Seriously, it doesn't matter; the CCFLs are all identical.

                  PlainBill
                  For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

                  Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

                  Comment

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