Recovering Orchids, are they ok?

[Swimmingorchids]

could possibly be but one thing I feel I have most experience with orchids so far is sunburn damage.

And I can't see it. I can see a brown patch and yellowing leaves but its winter now anyway so sun will not be an issue

Edit: Sunburn damage occurs on the leaves receiving most light. Very rarely will sunburn damage show on the oldest leaf that is covered by several young ones.

EDIT 2: Ok so yellowing leaves, like said, indicates a nutrient deficiency.

Orchids benefit from rainwater and that that rainwater is at a ph of roughly 6.0

If you use tap water with a ph of 8.0 - leaves will yellow slightly.

They need regular light feeding also as they have no soil to get nutrients from

The phal in particular is going to leech nutrients out of the lower leaves to produce the flowers it is growing.

However I can see some lighter spots starting to develop on the dendrobium too which will limit its growth a bit.