I just finished rebuilding a KX-200 and the only option you have is to get 2 560 Uf 400 volt low ESR caps. One is for C1 and the other is for C2B. I used nichicon brand.
Fixing up a Fisher KX-200
I have an old fisher KX-200 that needs some new parts but i cant seem to find any of the oem parts or new equivalent parts. The cardboard/paper can capacitor marked C1 seems to be totally buggered (the out side shell of the cap can spin even when the cap is solidly mounted) it is labeled 200Mfd 250vdc.