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This is due to the L2 inductor chip either being faulty or fallen off of the board. It is very common for these chips to come off the board if the ds is dropped. Below is an image showing the L2 inductor chip. There are lots of guides of how to take apart your DS. You could look one of these up and check the inductor chip is still present.
A very common problem with the DS Lite is that when it is dropped a small chip called the L2 Inductor comes away from the motherboard. This will still enable the DS to charge but you will not be able to switch it on. This guide will take you through step by step how to repair your DS Lite.
Things you will need :-
Tri-Wing screwdriver -
Small phillips screwdriver -
A case opening tool -
A soldering iron -
Some solder -
If you are lucky then your L2 inductor is still rattling around inside your DS. If it is lost then they can be bought very cheaply off of ebay :- L2 Inductor Ebay (Please note - This is not my ebay username, just the person that I always get my parts from)
Ok now we have everything it is time to start. Clear a nice big area for you to work in.
First remove any game cartridges from their slots and the DS stylus, like so -
Next remove the battery cover and 2 small rubber bungs here -
Underneath the 2 rubber bungs are 2 phillips screws.
Next remove the battery and take out the circled 3 phillips screws. You do not need to remove the uncircled phillips screw in the battery compartment.
Next, remove the 4 circled tri-wing screws using the tri-wing screwdriver -
Ok, thats all the screws removed, now to lift the case off. Pulling up from the back with 2 fingers on the shoulder buttons gently pull up and towards you but only enough so that you can get the case tool in to help with leverage. See below pictures -
Work the casetool around the gap and the top cover should lift off easily. DO NOT FORCE IT! You will then be able to see the motherboard like so -
The L2 Inductor sits to the left of the motherboard, right underneath the power switch -
Make sure that when you took the case apart if the L2 inductor was rattling around, it has not been lost. Hopefully you have managed to find it. What you need to do now is resolder the L2 inductor back onto the motherboard. Hold the L2 Inductor in place and carefully apply the soldering iron to each end, like so (it does not matter which way round the L2 Inductor goes) -
If you need to hold the L2 Inductor use something like tweezers.
Once you have secured the L2 Inductor onto the motherboard apply a tiny amount of solder onto each end of the L2 Inductor just to give it a bit more strength.
Thats it! You are done! Congratulations, you have repaired your DS Lite!
Now all you have to do is put it back together and you are finished. There are a couple of important things you need to know when putting your DS Lite back together.
You must make sure both the power switch slider and the volume switch slider are in the right place. The power switch slider should spring back to where it is supposed to but these pictures will confirm where they need to be -
Volume switch all the way to the left
Power switch all the way to the right as you look at it
The case sliders also need to be in the right place too, if you do not get this right you will break the little tabs off of the switches!
Volume slider all the way to the left
Power slider all the way to the right
When you re-assemble your ds, start refitting the case from the front backwards. Get it all in line on the front and the back should drop down with ease. Again do not force anything!!
Replace all the screws in reverse order and you are 100% done!! Give yourself a pat on the back!!
blowin F1 or F2 fuse or both inside your nds. can be fixed by runnung a bead of solder the blown fuse so it bridges the fuse (idealy you would replace fuse but its very tricky) first of all if you have a multi meter check the fuses before soldering them. anyway i advise not to use the homebrew card especially on your nds when you bridge the fuses as once the fuses have been bridged there is no saftey shut off to stop more sever damage. oh by the way just youtube F1 and F2 fuse location to find out where they are. oh and use a 15watt solder iron to be on safe side (less chance of overheating any components near fuses when soldering). its not that hard to do really (i did 2 of them with a gas solder iron due to me not having a 15watt iron) also replaced cracked screens. my next job to do is replace a L2 inductor on a friends nds (symptom for this fault is nds charges but will not power up, not even a blink of green light) for anyone who has this symptom its the L2 inductor thats broken away
Many times, it is the L2 Inductor chip that has popped off on impact- that's usually what you hear rattling around inside the housing...and it requires a TriWing screwdriver to open it. I tried re-soldering the L2 inductor back on the mainboard inside with a Hakko ESD protective soldering station, and it worked for a few days and then died again. The fix was finally desoldering another SMD inductor chip off an old PIII Socket 370 motherboard (with ChipQuik removal solder and flux kit) of very close to the same size class, from next to the Clock Generator Chip- figured it would be close to the right value, since I had no way to measure the micro- or millihenries value, and the voltage was around the value that the DS Lite runs on. The fix worked, and is still working, charging, and going strong. Usually the symptoms of the L2 inductor popping off, or failing, is being able to charge, but not being able to power up.
There maybe something wrong with the jack inside your Nintendo DS, you can easily get them repaired at a few shops, just tell them that the On/Off switch doesn't turn the DS on and they'll fix it for you, shouldn't cost an awful lot as they're just replacing something inside.