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.

[jjan]

Thanks a lot for your prompt reply.
the plant was sitting on the west facing window among all the other orchids. All other orchids are fine except these two.
I temporarily move them to east facing window where the sunlight is not that strong.

When I got the plants they were packed in orchid mix consists of bark, moss, charcoal and some other mushy dry stuff. roots were packed but most of them were dry.

I reported them in hydro balls and water them once a week.

I live in Toronto

please let me know if you need any other information.