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    memory bus termination regulator very hot

    So after recapping this msi mb, i still get no video, no post codes on my post card. So, I start feeling around, and everything is cold or very loghtly warm. The W83310DG is burn your finger hot. I look up the chip, it's a memory bus termination regulator. I let it cool, pull out the ram c hips, power on and the chip is hot in seconds.

    Does this seem normal?
    Do you think the chip is shorted?
    Do you think there is a different explanation?

    Thanks!

    #2
    Re: memory bus termination regulator very hot

    Not normal.

    Was it hot before the recap?

    I'd check close for solder bridges on/near the caps you replaced, near the RAM slots. Check across the VTerm caps/bus for shorts with a DMM.
    "pokemon go... to hell!"

    EOL it...
    Originally posted by shango066
    All style and no substance.
    Originally posted by smashstuff30
    guilty,guilty,guilty,guilty!
    guilty of being cheap-made!

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      #3
      Re: memory bus termination regulator very hot

      I don't know if it was hot before, there were some obviously blown caps, so I didn't troubleshoot further at the time.

      What does vterm stand for? My googling shows it is associated with memory, but it assumes you know what it is.

      I don't see any solder bridges, and I cleaned up my solder job, so it looks decent.

      I am considering taking it off of the board and seeing if I can at least get a POST out of the board. Would doing so cause damage? I will keep the ram chips uninstalled for the test.

      It also looks like the chip may have been a victim of stripping the board of "not essential" caps.

      Attached Files
      Last edited by clearchris; 01-09-2014, 10:20 AM.

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        #4
        Re: memory bus termination regulator very hot

        no reversed caps?

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          #5
          Re: memory bus termination regulator very hot

          I wish. I just triple checked. They all face left or down.

          I'm throwing in the towel on this one. For grins, ill get a new regulator at some point, but Im going to put an order in for a new board.

          Comment


            #6
            Re: memory bus termination regulator very hot

            Missing information
            - board model
            - chip supply (3.3V ? 2.5V ? other ?
            - memory type (DDR I or II or III ) ?
            - what was recapped (CPU ?, memory ?, chipset ?)
            - did board worked before ?

            One blind guess - empty capacitor places ( + connection ) leads to output of W83310DG ( pin 4 ) - if it is so - they should be populated (not without upper information) ...
            Last edited by tmiha71; 01-10-2014, 03:58 PM.

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