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CQ510 Blinking Light dan charging output not normal

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    #1

    CQ510 Blinking Light dan charging output not normal

    Hi there, I am having problem with hp Compaq CQ510... everytime plug in power adapter, suddenly D12, D11 light on blinking once each. Then off. Then blink again one each then off. Power button does not work at all. Check output voltage on charging pin comes resulting less than 5 volt. then everytime the lights on then the voltage becomes less than zero then lights off come again to 5 volt...
    need help please
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    #2
    Re: CQ510 Blinking Light dan charging output not normal

    Tried checking on TPS51124... VIN got normal 5V.. but V5FILTER HAVE 5 VOLT, THEN WHEN THE LED LIGHTS BLINKING ONCE.. THE VOLTAGE DROP THEN GOES UP NORMAL AGAIN... SAME THING HAPPEN WITH VOUT1 AND VOUT2... HAVE GOOD VOLTAGE OUT BUT WHEN LED BLINKING DROP DOWN THEN NORMAL AGAIN. IT HAPPENED JUST WHEN PLUGGED IN CHARGER, BEFORE PRESSING POWER BUTTON. POWER BUTTON PRESSED DOES NOTHING AT ALL. ANYONE CAN HELP ?

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      #3
      Re: CQ510 Blinking Light dan charging output not normal

      try check CL or PL, there are high-voltage capacitor about 1nf
      maybe they are shorted...

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