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ProView EM-190 TFT Model 900

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    #1

    ProView EM-190 TFT Model 900

    This VDU was rec'd dead
    This requires a 12V 5.0A or greater PSU for the power.

    Usual culprits, crapacitors with high ESR
    Both of the NKCon EVX 25V 100uF caps on the invertor pcb read 13Z!

    However on the controller pcb, a 8 pin SMT device is burned.
    Trying to source this part with diffuculty.
    All I can read from the part is;
    ST ??..Q6W6 on one line and below
    B or 8 followed by 433S
    I'm pretty sure it is a Q as I can make out half of it with the tail
    on the bottom RHC as the tail of the Q is in the style used with
    etched IC numbers.

    Obviously a ST Microelectronics part.
    The missing part number cannot be read due to the thermal damage.

    Any help here greatly appreciated

    Thx
    Tags: None
    #2
    Re: ProView EM-190 TFT Model 900

    Have you tried to clean the surface with isopropyl alcohol (isopropanol) on a cotton tipped pin? I've found that it often brings out the text on such surfaces.
    ------------
    Be a mensch

    Comment

      #3
      Re: ProView EM-190 TFT Model 900

      Well...

      Yes, cleaned as usual
      But anyway the IC is thermally damaged with a hole in it!

      Thx

      Comment

        #4
        Re: ProView EM-190 TFT Model 900

        Originally posted by JEWilson
        Well...

        Yes, cleaned as usual
        But anyway the IC is thermally damaged with a hole in it!

        Thx
        That unfortunately usually means something ELSE has failed. I'm sure you're aware the best hope of identifying the 'blown' component is by comparing to an identical monitor. In the meantime, a picture of the circuit board might help.

        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

          #5
          Re: ProView EM-190 TFT Model 900

          24C16W6
          ST logo
          842SS

          8 might be a, (b), also one or more S may be (5)
          there is a data sheet for first number,
          Got it from a EM-170 , may be what you want

          Comment

            #6
            Re: ProView EM-190 TFT Model 900

            Originally posted by Bobdee
            24C16W6
            ST logo
            842SS

            8 might be a, (b), also one or more S may be (5)
            there is a data sheet for first number,
            Got it from a EM-170 , may be what you want
            You, Sir, are a genius. Actual part number would be M24C16WBN6TG, made by ST Microelectronics. The bottom line is date code / manufacturing plant, etc. It appears to be a Serial EEPROM. Probably used to store brightness, contrast, etc. settings.

            PlainBill
            Last edited by PlainBill; 03-12-2009, 04:06 PM.
            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: ProView EM-190 TFT Model 900

              thanks,just glad I could help ,good luck

              Comment

                #8
                Re: ProView EM-190 TFT Model 900

                Thanks for the help

                I want to close this thread
                see further https://www.badcaps.net/forum/showthread.php?t=6788

                Comment

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