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My laptop Compac NX 7400 doesn't run when I connect it on AC sector with the battery removed. Even with battery nothing comes. What the problem ?

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  • 10 Answers

That sounds like you may need a new AC adapter. If you need help finding the right AC adapter, I can help you.

Posted on Apr 23, 2013

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Posted on Jan 18, 2008

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SOURCE: hp compaq nx9110 runs only on battery when it is plugged to AC

It sounds like you have a faulty power jack, and possibly a dead battery as well. You should take it to a person you may know that can order and solder a new one in or take it to your local electronics repair shop. I do repairs like this on a daily basis for my computer business.

Posted on Apr 28, 2009

Geekman
  • 32281 Answers

SOURCE: compag nx 7400 my laptop power supply not work

Whenyou connect the power adapter into the laptop, does the power LED light up? Ifnot then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's power socket.If the power/battery LED light flashes and in a certain position this LED lightstays firm, then the power socket is either faulty or it has a dry solder jointwhere it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Posted on Jan 07, 2011

SOURCE: Mine is dell latitude d620

my dell laptop doenot want to turn on even though it gives the green light

Posted on Nov 09, 2011

kd_sargent
  • 2 Answers

SOURCE: I have an acer aspire

Bottom Line the manual says if the light to not come on when cord is bluged in battery out get a new motherboard. You may also hear a slight ticking like a clock tick.. The Issue is the U58 chip on bottom side of motherboard burns out. sometimes takes out U63, U59 and U64 are same corresponding chip and can fail as well at worst case... Usually just U58..it is a 4812 chip you can get for a few cents...I heard how ever if you replace U58 and think U59 with the U63 chip a 4800IC chip the issue goes away... Trying to confirm... Until I confirm recomend either new mother board or correct U58 chips 4812..mosfet n channel..

Posted on Aug 26, 2012

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