Help me revive some plants? Dedrobium noid and Maxillaria spegazziniana

[zainal abidin]

The Den pseudobulb is still green not to worry when spring/summer come usually it will produce small keiki at the base of pbulb as you said now the season is winter basically all the tropical orchids species will be in a dormant state no active growing at this time.Your maxillaria better cut remove all the dead tissue and re-mount again.

[Pawbla]

The Dendro is easy, it has no good roots haha. And I know how those good roots look. But the Maxillaria, I have never seen "good roots" or I haven't recognized them.

Also: So do I cut the Dendro or not? Even if it's winter, I saw it with better light and part of it is yellow. I think I should cut the bad canes?