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    blown fuse on t430 motherboard, screen won't turn on, very dim

    Discussion in 'Lenovo' started by delta10078, Jan 17, 2016.

  1. delta10078

    delta10078 Newbie

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    Been looking around to figure out how to fix this, is it possible or just sell for parts? I heard new mobo or get a skilled tech to fix.

    T430
    1368x768
    i5
    180ssd
    8 gig memory

    what do you think? I know this is a common issue, scrap it?
     
    delta10078, Jan 17, 2016
    #1
  2. MidnightSun

    MidnightSun Emodicon

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    How do you know it's an issue with the motherboard? A very dim screen could simply indicate that the backlight has died, which would be a relatively simple and inexpensive fix. One way to isolate whether it's merely a problem with the screen would be to connect an external monitor and see if anything displays there after boot-up.
     
    MidnightSun, Jan 18, 2016
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  3. delta10078

    delta10078 Newbie

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    Yes it connects and powers on a external monitor, how do I fix the backlight issue? When it powers on when you shine a flashlight on the monitor it displays very lightly for a short time.

    Is there any software that can test the motherboard?
     
    Last edited by a moderator: Jan 18, 2016
    delta10078, Jan 18, 2016
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  4. MidnightSun

    MidnightSun Emodicon

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    Yep, everything you've described so far sounds like an isolated display/display backlight issue. Your motherboard is fine.

    Simplest fix would probably be a whole LCD panel replacement (a 1-minute search on eBay and I could only find entire LCDs rather than just the backlight), with parts such as these.
     
    MidnightSun, Jan 18, 2016
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  5. delta10078

    delta10078 Newbie

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    Well, I tried two displays already and both are doing the same thing, however neither one was the correct model number (t1) (f1) so I guess I need the EXACT one for it to work. Will return and try again.
     
    delta10078, Jan 19, 2016
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  6. delta10078

    delta10078 Newbie

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    just bought the exact screen and it's still not working. can inget some advice? it connects and works well connected to a external monitor.
     
    delta10078, Jan 23, 2016
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  7. zomi

    zomi Notebook Enthusiast

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    Fuse f7 - motherboard fuse for backlight

    its on the underside of the board / under the lcd connector

    Hope that helps
    Check it with a multimeter if its blown then thats why you have no baclight
     

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    zomi, Jan 23, 2016
    #7