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Help to identify IC on Linksys EA8500

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    #1

    Help to identify IC on Linksys EA8500

    Hello folks, recently I got wireless router Linksys EA8500, half working.
    After visual board inspection I found one bad IC, cannot find anything in google,
    maybe someone can help me to identify it. Looks looks it's CPU voltage regulator.
    Marked as 208AB 627FL 2019 (UP8) - Voltage around IC - 0v
    On other side there is another one 208AB 627FM 2080 (UP12) Voltage 1.05V
    Photos in attach
    Attached Files
    Tags: None
    #2
    Re: Help to identify IC on Linksys EA8500

    208AB looks to be Dual-Buck switching regulator, the 209AB looks to be single Buck switching regulator.
    I have no luck finding any info on either one of them.
    Last edited by budm; 11-20-2018, 10:59 PM.
    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

      #3
      Re: Help to identify IC on Linksys EA8500

      I think I found similar it's SMB208ANT-2019L or SMB208A
      Now I have another problem, to find it in stock.
      Attached Files
      Last edited by xfox; 11-21-2018, 08:46 PM.

      Comment

        #4
        Re: Help to identify IC on Linksys EA8500

        You might have another problem if I read this correctly it says that it digitally programmed now is that to mean that it has to be programmed before it installed

        Comment

          #5
          Re: Help to identify IC on Linksys EA8500


          DIGITAL INTERFACE/NON-VOLATILE PROGRAMMING 2
          The built-in serial digital I C/SMBus compatible port and built-in non-volatile programming bring several benefits to power supply design with the SMB206A/7A/8A. Many external components are eliminated that would otherwise be used to set configuration and parametric values. Additionally, the digital interface allows for quick and easy development and debug without hardware changes. Finally, after the non-volatile power-up configuration, the serial port can be used to re-program the SMB206A/7A/8A by host software after the system is running. For quick programming development and debug use Summit’s prebuilt evaluation kit including a PC- based graphical user interface (GUI).

          This is what I am talking about earlier
          Last edited by sam_sam_sam; 11-27-2018, 09:55 PM.

          Comment

            #6
            Re: Help to identify IC on Linksys EA8500

            I think router's firmware doing that (IC programming/control), but anyway I was unable to find replacement, it's Qualcomm IC and there is no replacement, so body completely dead.

            Comment

              #7
              Re: Help to identify IC on Linksys EA8500

              You can try this

              https://www.hkinventory.com/public/P...Code=&Qty=2562

              I have not used them before
              When I do an inquiry I ask if they take PayPal if they do not I will not use them
              That is just me

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