Free orchid with an issue!

[nikkik]

I got this guy last night for free. I know what I think the problem is, but I would like to know what your diagnoses would be to make sure my line of thought is correct.

To help provide a better diagnosis, new growth is clean and the leaves are clean underneath. Four leaves look like the one in the picture.

[Nexogen]

?

[CTB]

I'd give it a good scrubbing and fertilizing, and set in the corner, will probably pert right up. Good Luck!

[RJSquirrel]

old leaves that have no nutrients left to give up is whats yellowing. yup for fertilizing and keep it out of sight for a while would go a long way

when a leaf starts to show the fat layer deteriorate its a sure sign of nutrient deficiency. the skin on top of the leaf is just like your skin. its a layer of fat and protection. it should be thick and waxy on a healthy leaf. the leaf is thin and weak when its not. when you see it start to shred the plant is vulnerable. a good fungicide wont hurt either. i use daconil rotated with physan 20. daconoil leaves a white residue but that wont hurt nothing but your eyes

[nikkik]

Thank you CTB and RJSquirrel. Now I just have to decide if I have room for this "fixer upper".