Step 1: What the Problem Could Be
Here is how to open it and possibly fix the problem.
I must tell you , this laptop suffered from a shorted out wire before this problem. I had to replace the power cable, inside the computer, between the screen and the power supply.
I had heard of people on the web, replacing there batteries with the same problem. Before trowing out that battery, or exchanging it from a refurbishing place, have a look at the fuse.
Step 2: What You Will Need
I got the screwdriver for a few dollars on the web on eBay.
the model is 360/ X50 from yaxun
look up eBay for Tri-wing trigram screwdriver
Step 3: Take the Screws Off The
Remove the 2 tri-wing screws using the special screwdriver I mentions before.
Step 4: Remove the Cover
Step 5: Remove the Board
Step 6: Locating the Fuse
If the fuse is actualy blown, un solder it, and replace for a new one.
I sourced it at Digikey, the part number is F2891CT-ND .
It's a 7V 32V fast type
Step 7: Put the Battery Back Together
Of course, if your battery is totally dead. The LED will not turn on.
In that case you will have to charge it a bit after reassembling it.
Put back the battery in reverse order.
Step 8: Final Test
leave it on charge for a few hours then remove it and press the test button. If you get LED coming on, it's fixed.