Hey everyone,
I was installing an RP2040 Lite modchip on my Nintendo Switch Lite. While reconnecting the battery flex cable (the one above the battery connector), it accidentally went in at an angle and caused a small spark.
Since then, the console powers on normally — I can hear game sounds, buttons and touchscreen work, and the fan starts spinning after a minute — but there’s no image at all on the display, not even backlight.
Removed the modchip completely
Replaced a small capacitor near SP1 that got slightly chipped
Checked all solder joints and flex cables under a microscope — all have continuity
Still, the screen stays completely black.
Could that spark have damaged a display fuse, diode, or power IC near the battery or LCD line?
Also, does anyone have a complete LCD power/display circuit diagram or trace map for the Switch Lite motherboard so I can follow the path with a multimeter?
Any advice or board photos would really help. 