Oncidium "Bobcat" with black spots on leaves

[Adela the beginner]

I purchased this orchid at a show here in Miami and repotted it as soon as I got it home. It was not in bloom when I purchased it. Recently I noticed that two of the leaves were turning brown and then last night when I was putting my very small collection of orchids outside after the storm passed (TS Fay) I noticed that the other leaves that are still green developed small black spots on the leaves. Could someone tell me what this is and how to remedy the problem? I tried looking it up in one of the reference books I have but could not find anything that looked like it. I would have posted a picture but the flash on the camera was too bright and you can't really see the spots.