Question about Toshiba (K000019660) Motherboard

2 Answers

Not getting the 3.0vdc i need from the main boardto power the inverter.

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  • rnnielsen Sep 04, 2009

    Do you mean the cap marked with black, can you give me a resistor number?



  • rnnielsen Sep 05, 2009

    Not getting the 3.0vdc i need from the main board to power the inverter that controls the screens back light

    This is on a Toshiba laptop mother board # k000019660 I have 2 board with this problem.

    Thanks

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2 Answers

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  • Master
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FIRST THING you should do is buy a new motherboard cmos battery. If that doesn't work or your time is not correct, then you will want to
unplug the power supply, after turning the thing off of course.

Then short out the CMOS jumper pins. Most boards have a way of shorting out the CMOS. It clears the CMOS which is related to the clock some how. It does not affect the battery. The shorting out process is very quick, like less than ten seconds should do it.
Then normalize the CMOS jumper to its original working position and the CMOS clock should start running, this time for good. Yes, go through the start up procedures.
I don't think you have any complex issues, but one never knows. You'll of course have to reset your cmos entries, including the clock, to what you want them to be.
So, I recommend looking at your boards manual and search for "clearing the CMOS" information.

Posted on Sep 05, 2009

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  • Master
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Hi,

It seemd that your power cupply unit ie, SMPS unit has been damaged, try replacing the power unit to get proper 3.0 vdv voltage, This is the only solution for this,.. If you are electronic expert try trplacing the 10ohm resister situted near 9 big black capacitor, this shoild solve your problrm

Vinod Kumar RNJ

Posted on Sep 04, 2009

  • Vinod Kumar
    Vinod Kumar Sep 04, 2009

    Yes the one with the black one....

  • Vinod Kumar
    Vinod Kumar Sep 04, 2009

    Just search for 10ohm resistir, there may be only 2/3 10 ohm resistor, you can identify by blackened heated form

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Posted on Jan 02, 2017

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