If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging 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 light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. I suggest you get a quote first.
SOURCE: using battery charger with 3.42A vs 4.74A for lap top
check the amperage on the ACDC adapter block for both of them.
SOURCE: charger not charging battery and no powering lap amilo pro 3515
Your power connector on the laptop has been bumped too many times and the solder connection has worked it's way loose.. somewhat of a common annoyance. Find a good TV Repair shop, maybe a reputable PC repair shop and tell them to please resolder ( better to replace, but could cause rejection if they don't have a source for micro parts ) the connector back onto the motherboard.. could cost you $100 because of what it takes to access the location for a 1 minute solder job.. sad but true, sometimes, EVERYTHING in the laptop has to be removed to solder the connectors on the bottom side of the motherboard, sometimes you can get lucky with bottom side access. Get someone experienced in circuitboard soldering techniques. A hobbist will burn up more than what they are attempting to fix.
Toby White-Beebe
Dell Certified Lead Systems Expert
Testimonial: "thanks souds like that is the problem"
SOURCE: my dell inspiron battery won't charge. The battery
sounds like a motherboard problem. to isolate it, check the BIOS and look for the battery info and health to see if the battery is recognized by the system. if available, try a spare battery. Updating the BIOS can also help. There are BIOS updates that contain fixes which can help improve battery performance. if all else fails, the motherboard will have to be replaced. Check with Dell support if your laptop is still in warranty.
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