Question about Fujitsu LifeBook N3520 Notebook

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What else needs to be considered when replaceing a laptop battery? I can't get it to charge, and unit will not run on AC alone.

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  • tnov57 Oct 07, 2009

    I placed the battery in the unit, and plugged in the adapter and it WILL NOT charge the battery. What else can I do?

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Make sure you charge it up

Posted on Oct 07, 2009

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How come this site has so many unanswered questions? Is it because to get an answer costs too much?


What's that about 'unanswered' questions ? we are all volunteering our experience to help you FREE !!!!

Does the machine run without the battery that is, on the power pack alone ? If so, it is either a dud battery or charging circuit (needs repair by pro) .
If the machine will not run on power pack alone, then the Charger Port is likely broken. Plenty of youtube vids show how to change it.

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AC power adapter is plugged in. The laptop works fine on battery power but as soon as you connect it to AC adapter, the laptop turns off.


So your saying the charger will charge the battery, as long as the laptop is off...But when it is charged, you remove the ac adapter, start up the laptop, running on battery power alone, then hook the ac adapter to it, and the laptop cuts off..???

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Charger light goes out when plug in computer


it could be that the connection jack on the mainboard has been dislodged from the solder joint, common among Gateway comuters and HP units too. is the DC jack loose from the notebook ? if so thats the issue it seems. You will have to bring it to a computer person to resolder. if not and youc an do it yourslef, save money -- but be careful not to damage anything on the mainboard.

Jan 03, 2012 | Gateway NV5207u Notebook

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I replace my ac power supply for my dell laptop inspiron 9100 but when connect the power supply to the laptop it keeps on blinking and the laptop does not power on


If you can , try charging the battery in another system and then try to power the laptop up with the charged battery.
If the unit will run on a charged battery, then there's a problem in the charging circuit, and you'll have to check all the components in that area.
If it doesn't, then there's a problem elsewhere on the motherboard, possibly in the DC/DC converter circuit.
Check for shorted SMT MOSFETs and blown or failing capacitors.
If you aren't tech savvy, this is not an undertaking for the inexperienced, and you may have to have the unit sent out for repair.
Most places don't do component level repair and will simply tell you that you need a new motherboard.
If you cannot find a service depot near you, you may want to consider going to www.supertech-IT.com and arrange to have the unit sent in.

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My acer 5920 wont charge or wont work on ac adaptor but the ac adaptor works fine on my friends laptop


Either the AC port on the back of your laptop has a lose connection - if operation without battery is an issue, or if battery charge only is issue - then battery may have to be reseated or it is at end of life. Test by removing battery and running AC alone. if connection port is bad, laptop will power off immediately/unexpectedly. Good luck! btw - batteries for this unit are around $40 on ebay

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I have an everex SA2050T laptop that powers up when plugged into the ac adapter and with the battery installed. If I remove either one, the laptop shuts off. While plugged in the battery light indicates it...


all laptops need a battery to run the power from the a/c adapter plug through the battery to the computer components. and your battery is fried laptops batteries only are good for 8 years at most and are usually around $50 to replace

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1 Answer

Not charging


which green light?

light from the ac power adapter or the light from the battery?

if ac power adapter you are referring to try a diff power wall socket if ac power adapter still off then replace ac power adapter alone.

if battery light is off but the laptop works fine with ac adapter alone try updating the laptop BIOS.

if ac adapter light turns off when it plug to the laptop replace motherboard.

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Dell inspiron 1300 does not see the battery


remove battery check if laptop works fine with ac adapter, if not then download the latest bios version first if fails then replace ac adapter. If laptop works fine with ac adapter. but cannot work with battery alone, download the latest bios then charge the battery for 6 hrs. if still batt not charging then replace batt. but as you mentioned you already replaced the batt and your still getting the same issue. replace motherboard.

Sep 24, 2009 | Dell Inspiron 1300 Notebook

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