Hello Everyone, this is my first post... I want to ask if anyone can identify what is happening with this plant. I was given it about 1 month ago and now it has a brown pattern on the leaves. I am worried that it is a virus, but I am having trouble finding pictures online of plants with viruses, so I don't really know. I have it isolated from my other orchids right now. Any help is appreciated! Thanks!
This looks like mechanical damage and water damage to me. When water sits on a leaf that is in the sun, the water is like a lens and can burn the leaves. Cut off the damaged leaf at its base (sterile cutting tool); keep plant separated from others; and watch for other signs of disease. Chances are this one bad leaf is all there is.