New to orchids from Oregon - Phal question

[Narnia]

I bought my first phal a few months ago and it did so well that I bought another one. The first one is still doing great -all of its buds have bloomed and they're all looking fresh and gorgeous. However, my second phal has a dying flower which is crispy and a second flower which looks like it's on the same path. It also has some black spotting under its leaves although the tops look fine.

Is this just the end of it's flowering and I'm being paranoid, or should I be concerned?