Nintendo DS Lite

There are two LED indicators on the right hinge of the console. The power LED will light green when the console is operating normally, and the battery is at a good charge. If the battery level is low the color of the power LED will change to red. The console will enter sleep mode and the power LED will start blinking slowly when the screen is closed. When using wireless connectivity, the power LED will start blinking fast. The recharge LED will light red if the console is plugged in and charging. Once fully charged the indicator LED turns off.

Not charging / powering on

Problem	Solution
Does not charge, but turns on	Check fuse F1 Check EM10 near charging port
Does charge, but not turn on. Green light flashes for a second	Check fuse F2 Check screen ribbons and WiFi Module connections. Startup test will fail if either one is missing
Does charge, but not turn on.	Check power button.
Does not charge or turn on	Try turning it on with a known good and fully charged battery Check fuses F1 and F2
Random crashes and shutdowns	check battery in a known good device Check if back side of bottom LCD is properly isolated, make sure it can't short out components on the PCB

Input / control problems

Problem	Solution
Touch input problems	Replace Digitizer
D-Pad or A B X Y buttons not working	Open the device, remove the PCB, clean the contact points and the rubber parts Check the rubber parts for damage. They will break if heavily used. A button may get stuck and will always make contact if broken. Replace if neccessary.
Shoulder buttons stuck or unresponsive	Check if buttons are assembled correctly. Buttons can become unresponsive if the spring is missing or placed in a wrong way. Check tactile switches, replace if broken

Display problems

Problem	Solution
Top screen discoloration	Broken ribbon cable or broken LCD, replace top LCD assembly loose connection of the ribbon cable
Bottom screen discoloration	Loose ribbon cable, check connections Broken LCD, replace bottom LCD assembly. Be careful when removing the digitizer from the LCD to not damage it.
Screen too bright, too dark or flickering	Adjust contrast pot hidden under battery cover. VR1 (left) controls the bottom screen and VR2 (right) controls the top screen.

Other Issues

Mechanical issues

Problem	Solution
Broken hinge	Replace top part of the case. Make sure to check upper screen ribbon for damage before fully reassembling the device
Scratched up touch screen	Replace digitizer and apply screen protector Check touch pen for damage and replace if necessary
Top screen plastic cover falling off	Quick fix: Remove as much old adhesive as possible, then add 2mm double sided tape and glue the screen cover back in Proper fix: Disassemble the device, pull back the top screen and replace all adhesive. Then put it back together.
Touch pen doesn't fit anymore	Open the bottom case, unscrew the tunnel which normally holds the touch pen and remove dirt / stuck objects
Hinge is loose	Often the housing piece that connects to the barrel hinge and covers the power light gets worn causing this issue. If its not the housing, replace the barrel hinge.

Other

Problem	Solution
GBA games not loading	Test with a known good game cartridge. Some GBA games have an internal battery that can stop games from working properly when fully discharged. Clean slot with compressed air and / or isopropyl alcohol Check the game slot for bent pins. Replace slot if necessary
DS games not loading	Test with a known good game Clean slot with compressed air and / or isopropyl alcohol Check the game slot for bent pins. Replace slot if necessary
No WiFi, chat not working	Replace WiFi module Check antenna cable for damage, esp. after removing the top screen. Replace antenna if the cable is damaged.
No sound or distorted sound	Check upper screen ribbon cable for damage. The audio signal travels through the flex cable to the upper part of the device Check speakers for physical damage or dirt buildup. If in doubt replace speakers. Check volume slider for damage
Microphone not working	Check the white microphone wire to make sure it's plugged in and not damaged Replace microphone