Ic all legs giving buzz beep is it bad

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  • Stevie2001
    Senior Member
    • Apr 2018
    • 183
    • irland

    #1

    Ic all legs giving buzz beep is it bad

    As am diagnosing a small issue i come to a section where thier is 5 ic and one of them are beeping with gnd.

    Connected multimeter gnd to ground and touched each leg of the ic and its beeping on all legs of that one ic has that gone bad?.
    Attached Files
    Last edited by Stevie2001; 04-28-2018, 05:47 PM.
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #2
    Re: Ic all legs giving buzz beep is it bad

    What's the ic ? Measure resistance not continuity.

    Comment

    • Stevie2001
      Senior Member
      • Apr 2018
      • 183
      • irland

      #3
      Re: Ic all legs giving buzz beep is it bad

      Originally posted by diif
      What's the ic ? Measure resistance not continuity.
      Pin5 pin6 pin7 pin8 10.2ohm
      Pin 2 00.8ohm
      Pin3 00.7ohm
      Pin4 40.3 ohm

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: Ic all legs giving buzz beep is it bad

        They are both mosfets. Check in diode mode betweens pins 2-7 then flip your leads round and test again. What are your readings ?

        Pins 1-4 look to be connected to ground, the other's don't.

        What's the issue, on what device ? It helps to know what part of what is being worked on.

        Comment

        • Stevie2001
          Senior Member
          • Apr 2018
          • 183
          • irland

          #5
          Re: Ic all legs giving buzz beep is it bad

          Originally posted by diif
          They are both mosfets. Check in diode mode betweens pins 2-7 then flip your leads round and test again. What are your readings ?

          Pins 1-4 look to be connected to ground, the other's don't.

          What's the issue, on what device ? It helps to know what part of what is being worked on.
          Mecer m77cu laptop
          6-71-M77C0-D04
          Last edited by Stevie2001; 04-28-2018, 07:11 PM. Reason: 6-71-M77C0-D04

          Comment

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