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Laptop boot issues - no post, all lights flash

Discussion in 'Mobile Computing' started by Neanderthal, Jul 17, 2007.

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  1. Neanderthal Newcomer, in training

    I have a IBM thinkpad, I have had no real issues with it in the years that I have owned it.

    I pressed the power on button yesterday and there was no post and all the lights stated to blink on and off.

    I was unable to power it off by holding the ppower button in and had to remove the power lead and the battery.

    This is something that I have not come accross before, anyone have any suggestions or hard of similar before?

    Neander
    Neanderthal, Jul 17, 2007
    #1

  2. lamo Newcomer, in training

    the model of notebook?
    lamo, Jul 17, 2007
    #2

  3. Neanderthal Newcomer, in training

    Its a IBM thinkpad T20
    Neanderthal, Jul 17, 2007
    #3

  4. lamo Newcomer, in training

    try to replace the ADP3421 chip.
    lamo, Jul 17, 2007
    #4

  5. Neanderthal Newcomer, in training

    Thanks for the advice.

    I will give that a try and let you know
    Neanderthal, Jul 17, 2007
    #5

  6. Neanderthal Newcomer, in training

    I just tried to power my laptop up before starting to strip it down.

    I now get a different POST.

    3 short, 3 short, 1 short.


    Could this still be related to the chip?

    Cheers
    Neander
    Neanderthal, Jul 22, 2007
    #6

  7. lamo Newcomer, in training

    DIMM problems. you should check soldering of memory slots via microscopy. if contacts broken - resolder them.
    the ADP 3421 death - is typical problem for all t2x series. the poor soldering of memory slots - too.
    lamo, Jul 22, 2007
    #7
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