The wrong information some repair centers give:
Most service centers don't want to deal with this problem on a micro repair basis. Many, including the large nationwide stores and the laptop's manufacturer, will either tell you the machine is not repairable or that it needs a new motherboard. These quotes usually run from $250 to as much as $800. They choose to ignore the fact that a broken power jack can be repaired without a motherboard replacement.
Common brands with this problem are HP/Compaq, Toshiba, Dell, Samsung, Acer, Sony, Alienware and Gateway. Don’t pay hundreds to fix something that can be done for under 100$. Many repair places only replace the motherboard and that can cost anywhere from $300-$1000.
Do I need to bring the ac adapter? Yes. We need the adapter to effectively diagnose the laptop and test upon completing the repair.
Am I charged if the repair doesn't work? you only have to pay the diagnostic fee. We are going to give you the real reason of the problem doing a full diagnostic.