Orange light stays on...

It could mean that the Motherboard (Main Circuit) could be damaged or could be a fuse problem as you may have said. Although it actually might be the battery, there's one way to find out, if your friend has a DS Lite, ask them if you could borrow your battery for 2 seconds and put their battery in yours to see if it is the battery, if the same thing happens, its the Motherboard (Main Circuit)

The issue is not with the fuses or with the battery. That end is working properly if the light stays a constant orange. The issue is with the other end, how the system powers on. Check the power slider (on mother board) or the L2 inductor (located below the slider). Chances are the tab on the slider has broken off or the L2 slider broke off from the motherboard.

possibly fuses have blown on the logic board, but it sounds like it needs a new one board.

It sounds like a faulty battery. As it is under 1 year old, it is still under warranty. Return it to the origional place of purcase, who will either fix or replace it.

If the DS was turned on when the liquid was spilled on it I don't think there is much hope to be honest:(

If it's under warrenty send it back otherwise you might try taking it apart and use a hair dryer to dry it off... that's a long shot though!

take it to best buy or where you bought it and they might tell you whats wrong if they dont go to support.nintendo.com and put it in repair and it will cost $50-$90

For GBA games the green light is meant to stay on. The orange light will stay on as long as its recharging. It will turn off when its fully recharged or when you unplug it

Really sounds like a dead battery. The DS will not work if the battery is bad even when it's plugged in. You get the quick flash of the power light and that's it.

um.... im jut asking dose it flash green, orange or red? if it flashes green it is fine if it flashes orange its giving you a warning then if it flashes red that is when you charge it oui? but if it flashes red and you still cant charge it well i ont know what to tell you? oui, no, maybe? wll if i didn help sorry but i tried. sorry or your welcome which ever best fis your dicription. †

You could actually have a couple of different problems there are little wires that go up to the top screen that break and or come loose that can cause this and there is also a fuse in the unit on the board that can cause it.