Vanda with bizarre yellow rings/spots

[Orchidreamer]

I bought this vanda over a year ago, and it has grow tons over the last summer, when it lived outside.

During the past summer, I noticed some yellowish flecks near the middle leaves, but I did not think too much of those flecks. Now, I noticed the flecks have morphed into larger yellow patches and...there's even a perfect bulls-eye ring. Some of the yellow patches turned into sunken dry brown areas. The patches appear on the middle 4-5 leaves, and are visible from both sides of the leaves.

I can rule out two factors:
-No cold damage
-No spider mites

I am considering doing a virus test if you guys feel the symptoms are suspicious. It looks sort of like pictures of orchid fleck virus I found online. I know if I send a sample to a lab, they can only test for CMV or ORSV, not the lesser known viruses, right?