phals loosing new leaves

[lakesusy]

Hi !Lakesusy here. Living in Northern Calif, retired. I am a newbie with a long love for orchids! My success/failure is spasmodic. Of late I I have lost several new healthy looking leaves from a couple of my phals. They look almost like they've been cut. The area where the leaves came from is blackish. Now I see one that appears to have some damage on emerging leaves. I have acouple of pictures I will attach. Thanking you for your advice in advance! You will probably get tired of hearing from me so I will try and space my posts on other problems.....