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Posted on Jan 02, 2017
Hello. There is a hardware failure with the laptop not the AC charger. AC chargers have some range of protections of their own. If the power requirements of the laptop are bigger then what the charger can handle, the charger will turn off. Also other parameters can bring the charger offline. In your case, you have a problem with a small chip, the battery charge controller unit, witch regulates the amount of current required to propperly charge the battery. When this thing fails, the charging requirements for the battery are reported rong and the AC charger is forced to give more power then necesary. This results in disconnection of the AC charger ( an internal fail safe of the AC charger) and the laptop to swich back to battery power. When the laptop is turned off, it can charge the battery because the power requirements are low, having all processor, main board, hard disk etc turned off. Therefore the AC charger can handle the load. However you will need to have it checked by a service center as it is a hardware fault. Both AC charger and laptop needs that check. The charge controll circuit needs to be replaced probably. It will be a somewhat expensive repair. Don't buy any other battery untill you have the laptop checked. For more aditional info please post back. PS. Sorry for my bad english, I am from Romania, it is pretty hard for me to explain tehnical stuff in english.
Posted on Feb 16, 2007
SOURCE: Dell 2650 DC wont work
While the laptop is plugged in, remove the battery and try to run off of your AC adapter.If that works then fiddle with shutting down the computer, and applying the battery again to see if it works. I have the same model at work, and came across the identical problem that has happened twice. By plugging it into the AC adapter and then removing the battery while plugged in, then trying to use it (sometimes it powers down and needs to be restarted, sometimes it continues to startup) then plugging the battery back in after it's powered down and unplugged from the wall has fixed it 100% of the time.
maybe something wrong with your ac adapter that you have to get new one,you can go to online shop http://www.global-battery.co.uk and ask the online expert.then you can get best solution!
Posted on Apr 12, 2010
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