Kaypro II help needed

I decided to drag out my kaypro II for testing/cataloging/photos and noticed it's even worse than before. previously, i was able to boot a cpm disk but got no keyboard activity. now, it powers on, spins the floppy a few rotations, then prompts to place a disk in drive a: and no more than that. hitting the reset button didnt do anything. it keeps coming back to the same screen. while typing this note, i noticed it finally booted off a floppy in about 5 minutes' wait and now i'm getting no keyboard input (not even ^M or ^G) and the floppy light is staying on but not spinning. i do get an a: prompt though. someone mentioned the keyboard controller chip missing, but it's there. this machine has two half height floppies which i assume incorrect. would full height pc/xt drives be "correct"? what should i check now? david