I have an ASUS Eee pc 904hd - it just doesn't power up at all - the lights on the charger light up - but there is no power to the laptop.

1.Should this run on mains alone ?(thus indicating a dc jack problem)

2.Or is it more likley to be the battery ?

Any ideas how I can test - or if there is a guide to replacing DC jacks ?

Cheers Guys

When I was in RS I use take the multi-meter and test the AC/DC adapter to if it was reading the correctly. The jack should be soldered in the motherboard. I know my ASUS Eee PC has tiny slot of the power. Got to handle it gentle. You could fix the issue but replacing the motherboard. I

Look at these pictures of your unit inside of it. Everything is on the MOBO soldered.
http://www.laptoppartwholesale.com/Eblog/asus-eeepc-serise-laptop-images.html