My laptop can only run on battery. When I plug the charger, the battery does not charge. When I take off the battery and plug the charger, the laptop does not turn on. I'm pretty sure it's not a charger problem, because using my spare charger doesn't work either (I always keep a spare charger just in case).
Is that just power jack problem? I hope that's the case, because power jack is kinda plenty on ebay. But I also read about possible power converter circuit problem
. What is this power converter circuit? Is that a part of the motherboard? Is that easy to repair or replace?
By the way, my laptop is Lenovo IdeaPad B460.