Phalaenopsis: Sunburn like leaf damage with white spots - Fungus?

[RavenTheJust]

Thanks so much for your replies.

This eased my concerns. I will leave it in a separate room for now because, I want to rule-out scale insects 100% before I move it next to my other orchids.

@estación seca
I know - my other orchids are on eastward and westward windows they never have noon sun, only morning and evening and they thrive.

This one really had a bad-lot with my mother in law - she's a lovely lady but aparently orchids are not really her strong side. I should've know.
I will re-pot and give it back to her in a new pot which I hope she can manage better.

Eventually spraying is probably not for most average plant owners. Either they lack sprays and if they have one they use tap water - which is usually too hard around here.

I hope I'll remember to post an update to share how the plant is doing.

Best