My Cuisinart Grind and Brew developed a leak. There was a small hole in the plumbing. It would leak all over the counter. That made it more of a Cussinart in my household. Here's how I fixed it with a little metal epoxy that I got from the local hardware store.
Most of the posts I see online about leaky Cuisinarts blame a clogged thermos lid, using too much coffee, using too finely ground coffee, or a clogged filter. If yours is leaking clear water like mine did, the problem isn't any of those. Before I opened it up I suspected a leaky hose or a cracked reservoir (though there really shouldn't be any reason for the reservoir to crack).
There are 4 hex or torx-bit screws holding the bottom panel on. My tools weren't skinny or long enough to fit in the narrow hole, so I just drilled the holes out. I probably used a 7/16" bit.
When I opened it up I saw a rusty (and cheap) clamp on those big orange hoses. I thought that might be the problem. But I also saw some discoloration in a spot on the aluminum pipe. Now that I had the bottom off I filled it up with water to find the source of the leak. I saw that it was leaking from the aluminum. So, I sanded the area of the leak and cleaned it off. That made the hole more visible. I patched it with some epoxy made for metals that I got from the local hardware store. The smallest size cost $6 and is much much more than I'll ever need, but that's cheaper than a new Cussi..., er, Cuisinart.
Since I drilled out the bottom I can't just reattach it with the original screws. I'll use a little glue (not too much) to hold the bottom on. Superglue might work. JB Weld would work well. Some other assorted craft glues that I have lying around should work.
If yours has a leaky hose, that should likewise be an easy fix. You can get a new hose from your hardware store. Zip-ties and new clamps are easy to come by.
Good luck! Let me know if you find this useful.
