phalanopsis leaves turned limp and grey

[Aminetm]

hello every one ,about 10 days now my phalanopsis leaves start to turn limp and grey as you can see on the attached pic
how can i save this orchid

[rbarata]

Are you giving it direct sun/strong indirect light?

[neophyte]

The medium looks quite dry; probably some combination of light and lack of water has caused cell death (mesophyll collapse?).

[Aminetm]

Originally Posted by rbarata

Are you giving it direct sun/strong indirect light?

no, just forget it once for few hours under direct light

[Roberta]

The front leaf looks like it might have been sunburned. Sometimes the damage takes a few days to appear. Cold can have the same effect. But since it seems to mostly be that one leaf, I do strongly suspect that it got a bit cooked.

[rbarata]

Put it under shade. It doesn't need too much light.
And don't wait for the medium to get dry. Considering the pot size, try for a start to water it once/week (that's what I do to mine under a low humidity, i.e., 30% winter and 15% in summer).