DEAD, No power, charger good-green light-Suggestions?

A1278, this 13” 2010 MBP appears completely dead. Won’t boot or show any signs of power with or without the Apple charger plugged in, plugged in there is a green light but I doubt the battery is fully charged. This was my sons, he doesn’t know what happened or won’t say. He says it was working when he closed the lid before bed. But in the morning it was dead like it is now. Is there a fuse on the logic board? I disconnected the battery, the green light is on whether or not the battery is plugged into the logic board. I’m thinking there must be a fuse