Help with component replacement ThinkPad T580

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  • mrkmpn
    Senior Member
    • Apr 2022
    • 59
    • United States

    #1

    Help with component replacement ThinkPad T580

    Hi, I'm taking another look at a motherboard I tried to repair about a year ago. While replacing a mosfet (that probably didn't need to be replaced), I accidentally damaged a small component next to it. The schematics show the part number PTC-540-2-GP.

    It's an 0402 package, and from what I've read it appears to be a PTC thermistor. I tried looking those up on mouser, but I'm not sure what 540 indicates. I assumed it was resistence, but I didn't see any with that resistence listed, and also am not sure what other values might be important.

    I've attached a copy of the schematics for the board in case it helps. The component in question is RT8.

    MOD Edit , Link to schematic -> https://www.badcaps.net/forum/showthread.php?t=104317
    Reminder: rules and organization of this section -> https://www.badcaps.net/forum/showthread.php?t=117483
    .
    Last edited by SMDFlea; 09-05-2023, 12:03 PM. Reason: Added "ThinkPad T580" to thread title,posted link to schematic

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