Vostro 1310 Power Issues

So I have a power problem with my 18 month old Dell Vostro 1310, I've tried numerous fixes but now i'm stumped so hoping someone on here can help.

The Problem: After plugging the AC adapter in the laptop will cut out approximately 5 seconds later. If I just plug the adapter in without turning on the laptop it doesnt charge at all.

What I've done so far:
- Tried a new battery, same problem (my battery/adapter work fine in friends identical machine)
- Tried a different AC power adapter, same problem
- Tried a new DC power socket, same problem

Any ideas? Or does it look like a more serious mobo issue?

Thanks

 

First thing I would try:

Remove battery and AC adapter and hold down power button for 30 seconds.

Test AC adapter with multimeter and make sure it is the correct voltage.

 

Tried and failed :-(

 

When you say cut out, do you mean shutdown or what?

Perhaps it's the connections where the battery is plugged in doesn't work? That would require a new motherboard or some serious soldering skills.