Switch Lite not turning on/not charging

[Greninji88]

Hello! I've been given a free Switch Lite, and it's not powering on. I've put it on charge for a few hours, and done numerous button combinations, but still nothing. The USB C port looks good, but I still opened the console. From what I can see, it looks all good. (A couple external screws where missing from the Switch, so someone must have previously opened it). So, I'm not sure what else to do. The battery isn't swollen either, so any ideas would be appreciated! Thanks!

(I'll post photos of the motherboard and the charging port soon)