IIRC Differences Between the C-30 and C-50
Among design changes is that Sunbeam did not plate the insides of the pots as deeply on the last of the Coffee Master series. Thus you often see the plating inside the lower container of C-50's worn away over time, especially around the nut/stem that hold the metal upper of the pot to the *plastic* lower housing. Over time this wearing down can allow small leaking of water into the base. This sooner or later will cause the thing to short out/stop working.
OTOH the C-30's are heavy and built like tanks even though the C-50's aren't lightweight either.
Among design changes is that Sunbeam did not plate the insides of the pots as deeply on the last of the Coffee Master series. Thus you often see the plating inside the lower container of C-50's worn away over time, especially around the nut/stem that hold the metal upper of the pot to the *plastic* lower housing. Over time this wearing down can allow small leaking of water into the base. This sooner or later will cause the thing to short out/stop working.
OTOH the C-30's are heavy and built like tanks even though the C-50's aren't lightweight either.