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Laptop boot issues - no post, all lights flash

By Neanderthal
Jul 17, 2007
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  1. 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
  2. lamo

    lamo TS Rookie Posts: 570

    the model of notebook?
  3. Neanderthal

    Neanderthal TS Rookie Topic Starter

    Its a IBM thinkpad T20
  4. lamo

    lamo TS Rookie Posts: 570

    try to replace the ADP3421 chip.
  5. Neanderthal

    Neanderthal TS Rookie Topic Starter

    Thanks for the advice.

    I will give that a try and let you know
  6. Neanderthal

    Neanderthal TS Rookie Topic Starter

    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
  7. lamo

    lamo TS Rookie Posts: 570

    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.
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