a diagnosis for my laptop please

Discussion in 'General Hardware' started by Perris Calderon, Dec 21, 2009.

  1. Perris Calderon

    Perris Calderon Moderator Staff Member Political User

    new york
    k, this box is about three years old, still running strong but the battery now lasts about 10 minutes

    I went to boot from hibernate this morning and nothing, a blip of lights for less then a second then nothing

    I tried a few times and then thought maybe the battery shorted out since it was so bad so I removed that and plugged back in

    still nothing

    hmmm...I had no indication of a pending failure so I would be surprised if anything was actually bad, maybe a seating or something came loose but I should still get the basic operating system on screen but no

    so I have my breakfast for about 10 minutes and as a lark I hit the power button and bing, it's booting

    nothing unusual at all with the boot from hibernate

    desktop looks fine, I go on line and the browser is light greenish blue


    I close IE down to see if everything is blue but no, just the browser

    I'm thinking some thing's screwed and I am going to have to go home to get my other laptop but I am going to use this till it fries

    then gradually, imperceptive, the blue eventually disappears

  2. LeeJend

    LeeJend Moderator

    Fort Worth, TX
    the flourescent backlight running too cold could produce a greenish color shift. Also, other info you provided point towards a power problem, though it's hard to say exactly what.

    If you are into science projects:
    Check the voltage on the battery with it out of the case. If it is charged it should be some multiple of 3.6 Vdc depending on how many cells there are in series.

    If the battery is dead/low the voltage will be less than 3.6V per cell but probably not that much below normal. In this case the laptop voltage regulator/charger or external brick may be failing. You can charge the pack externally (provided you have a curent limited power source and are very careful). Check the pack rating 2200 maHr, etc. and charge at a current of no more than 1/2 the rated (1.1 Adc for a 2200 maHr pack). Stop when the number of cells x 3.7Vdc is reached. You need to go higher in voltage to get a full charge on the battery pack but this is a test only and Lithium batteries can do bad things if over charged (or shorted). Put the pack back in the laptop and see if it behaves ok. If all looks good the laptop external power brick is likely bad.

    If one cell is shorted/dead the pack voltage will be low by ~3.6Vdc. In this case toss the pack (in an environmeatally friendly way) unless it has replaceable cells. But even then I'd toss the whole pack since of one died the others are suspect.

    If the above two checks get you nowhere it is likely the laptop internal PSU.
  3. Perris Calderon

    Perris Calderon Moderator Staff Member Political User

    new york
    I think you hit the nail right on the head then, temperatire must be the problem, I left the laptop in my car through the snow storm

    as far as power, again I know the battery is bad, I've been putting off getting a new pack since the lap is so old, now that you mention in, probably a very week transformer from the ac is weak as well, thanx leejend, I think you got it