The battery of the Nintendo console wasn't properly fitted, and therefore shut off the console randomly
Unscrewing the back of the console with a screwdriver (was difficult to do on its own), then pushing the battery back into its slot and placing a thinly folded sheet of paper on top of the battery to keep it in place
So the console would stop randomly turning itself off every hour or two
It is important for ones own skillset, boosts creativity and feels rewarding. It is also better for the environment to fix your own items rather than purchasing new stuff