Yellow and lots of black spots. Sun or fungus?

[Helene]

This has always had some spots, so its been in quaranteen all alone- but its been in a window with strong bright light. Not sure if its the sun or some fungus?

I've sprayed for mites and insects, flushed the pot first. Gonna let it be for a week or so, and repot. New growth also have spots.

Any idea what to do?
Its a NOID, got it last year.

Last year:



Now:



Front of leaf


Same leaf from the back


Two new thingy



This leaf/spike/whatever doesnt seem to be very happy…


I usually keeps my orchid happy, but not this one. Moved it to a more shady place today. Hopefully it will get better.

This had the same problem last year, but new growth looks fine:



Its not water, but can the sun make this damage even when its not wet?

I've been trying to read, but its not always easy seeing what is insect damage or fungus or sun or something else. Haven't much experience with this yet.


Edit: its wet in the picture cause I just sprayed with some insect spray, and mites- just in case.