My orchid is dying please help!

[MrHappyRotter]

It doesn't look like a viral infection. It kind of reminds me of sunburn and subsequently a secondary infection set in. Were the plants close to a window or under a skylight where they might've gotten intense beams of light for a period of time?

Can you describe your growing conditions? Looking at the photos without a bit of knowledge makes it hard to figure out what's going on.