Help to ID SMD device

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  • clackersx
    New Member
    • Sep 2014
    • 8
    • Australia

    #1

    Help to ID SMD device

    Hey guys,

    Any chance somebody could help me out.

    I have a Powercolor ATI Radeon XT1950PRO AGP and one of the transistors? is broken off.

    The only text on it was "02L6U" (sorry I have no way of getting a closeup of text)

    The "02" is underlined _ _

    I have uploaded image to Imgur also. ( http://imgur.com/a/pQMoK )
    Attached Files
  • Mad_Professor
    A Mech Warrior
    • Feb 2011
    • 1587

    #2
    Re: Help to ID SMD device

    Looks to be a 3.5v fixed positive LDO regulator.

    http://www.datasheets360.com/pdf/-6141405137902327017

    Although it's a 5 pin set.

    You only have three pads, which means it's a custom regulator or very old series. 02 could be a date code or series code, Usually date code.

    Check to see which pad had ground.

    Comment

    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia

      #3
      Re: Help to ID SMD device

      Originally posted by clackersx
      Hey guys,

      Any chance somebody could help me out.

      I have a Powercolor ATI Radeon XT1950PRO AGP and one of the transistors? is broken off.

      The only text on it was "02L6U" (sorry I have no way of getting a closeup of text)

      The "02" is underlined _ _

      I have uploaded image to Imgur also. ( http://imgur.com/a/pQMoK )

      It will be a transistor as the location is marked Q1001

      I'm going with 2N7002. pretty common transistor. If you have any scrap boards around like a laptop motherboard. Could be marked K702, 702 maybe you can scavange one

      look at this http://www.slideshare.net/jrbb2000/8...conductors2010

      and go to pg 251. there's a 02 with underline
      Last edited by tw2005; 09-23-2014, 11:37 AM.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Help to ID SMD device

        Is resistor R3595 missing? one end of the resistor is connected to the PCB pad, another end is connect to pin 3 (Emitter or Source pin) of that transistor, so the pad on the edge of the PCB can either be the input or output.
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • clackersx
          New Member
          • Sep 2014
          • 8
          • Australia

          #5
          Re: Help to ID SMD device

          Thanks for the replies, R3595 is missing, there is no evidence I can see of it ever being fitted.

          Turns out my multimeter has died and I need another, I think R1425 side is ground

          Comment

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