The lights are on
To be honest, the NES clones really aren't that reliable. Every time I've bought one, the games look grainier then normal, and the sound is off. Plus, some of the bigger games don't work on all of them. like Mega Man 2. If I were you, I'd eat the extra cost and buy a top-loading NES. The top-loader is much more reliable than the standard NES and miraculously, it will still play a game if you breathe near it, unlike the OG NES. However, this is the more expensive route unfortunately. If you're strapped for cash, I'd buy a standard NES and just replace the 72-pin connector in it. Even if you're not very tech savy, it's a very easy thing to do and there are a plethora of guides on the internet to do so.