You can't fix dead LEDs and you probably can't replace it easily either. Try to return it or exchange it, the resistor value is probably wrong, or these aren't tested and the board is faulty.

i dont know how to fix the led but that screen is a crash screen  try reflashing lsdj and a new sav

Is there any way I can fix the led in my backlight, or do I have to get another one?

Could you tell me what this is.

No Ape. It was a nonfinite one I got the other day. I just opened the package.

Also LSDJ I running but no notes are playing or showing up on right side. Please help!

Edit: never mind LSDJ just had a glitch. I think.
One of my LEDs in my backlight still isn't working though. I have the v4

That's not one from us, is it? I've never seen a dead LED in a panel like this.

Led stopped working.
Also this.

Not playing

Playing

I seem to have another problem. Only 3 of my 4 LEDs are lit (i have the v4.). And I lost one horizontal line.

not a problem!

It worked! Thank you guys so much for your help.

i've found the little throwaway towels used to clean eye glasses work well.  'lens cleanser pad' or something like that.

they don't scratch, are pre-soaked in an alcohol based solution just for this sort of thing, and are individually wrapped for convenience.  and, they should dry streak-free since they are for glasses

if you or someone in your house happens to wear glasses, track them down and give it a shot!

Yea I believe alcohol should work.  So no need to start over...  As for alcohol dripping on the PCB, don't sweat that.  Alcohol evaporates clean and is usually used to clean the PCB.  So you should be fine if it happens.

Thanks. I'll try that right now.

i hear people use a tiny bit (very tiny) of rubbing alcohol and a q-tip can remove it
just do use too much cause you dont want the alcohol dripping onto the gameboy's pcb