How do I save this orchid?

[plantnoob]

I'm not experienced enough to know what's going on but my orchid is going downhill each day! I attached some pictures and any advice on how to save it would help me a lot! Really don't want to give up on this one and learn from this hopefully.

Also side note, when I was staying at home everything was going fine but I'm staying in a student accommodation now and the heating is always on max when it is turned on which I think was too much for the flowers so I cut the stem off after they had fallen off and moved the plant well away from the heating. I have another recovering orchid from a while ago which is showing some new root growth and doesn't have the issue the one in the picture has.

Thank you in advance!

[dbarron]

It looks like severe tissue necrosis (like it's been frozen). Nothing you can do about the already dead tissue.

[No-Pro-mwa]

Also the roots look a bit dehydrated to me.

[silken]

The roots look OK to me, slightly damp but soon needing watering. However the leaves are either getting direct heat or sun or something else is killing them off. I would remove the dead stuff back into healthy tissue, just in case it is something that is spreading. Treat cut ends with cinnamon. Remove from any direct sun and heat source. Hopefully this was damage that occurred when near the heat source and won't keep happening.

[estación seca]

Was it sitting directly over a radiator? The leaves could have been cooked by the rising hot air.

Phalaenopsis should be watered, then allowed to dry. I suspect, from the shriveling leaves, yours hasn't been watered enough. The bark might also be getting a bit old, but I think it would be fine to wait to repot until the plant is a little happier.

[Orchid Whisperer]

The brownish soft tissue has a bacterial soft rot (Erwinia or similar).

If possible, cut between the soft/brown and the stem, cutting through uninfected green tissue. Use a very sharp flame-sterilized blade. If the brown extends into the stem, it will be near impossible to stop the infection.

After cutting, I would not water for a few days. When you do, water carefully, only the roots, no water on leaves.