Hello! This friend recently gave me her switch since it didn't turn on. it's a V1 model she hasn't used for 2 years now.
I've tried charging it in different outlets for hours, (with an official charger of course) and tried different button combinations to try to get it to turn on, yet nothing.
Since the warranty is over i opened it, connected and disconnected a couple things, and tried again. Yet nothing. I'm not an expert, this is just a hobby for me, so I'm not sure if there's something in the motherboard I'm not seeing.
Battery looks fine, as well as the charging port, so i have no idea what to do 
I'll attach a couple pictures of the motherboard.
Hope I get some help, thanks in advance! 