HELP!!! WHY MY PHILODENDRON HAS RED BROWN IN THEIR LEAVES??!!!
Yap, I agree with Megan. It looks like it's getting too much sun, so I think the best thing to do would be to cut off the brown part and fix the previous location. This plant likes bright, indirect light, so that's something to remember.
Oh, it seems you might've given it too much sunlight, which could explain why it's turned brown! If it's only brownish yellow, it could be a pest – have a quick look and see if you can find out what's causing it.