These are a DS Lite fuse replacement, it’s a common problem for the fuses in the DS Lite to blow, it can happen from a power spike when the console is charging, it can also occur when doing a screen replacement and the back of the screen touches the motherboard causing a short and the fuses will blow to protect the console from the short circuit. Note these need to be soldered in and we only recommend attempting to do it if you know what you are doing with a soldering iron, they are mainly going to be bought and used by people that fix consoles for a living, with that said though if you do know how to use a soldering iron, these can be replaced by the home hobbyist. Below is a diagram that shows the position of the DS Lite fuses on the motherboard. Note that the DS Lite does have two fuses, so if you are unsure which has blown, you should buy two of these just to be safe, buy DS Lite fuse replacements here today.
DS Lite Fuse F1 & F2 Location
| 
