After brewing, it appears that a regularly used carafe will cause leaking of 10% of the coffee from the top lid onto the counter.
The Cuisinart DGB-600 Coffee Maker has a hands-free lid that has at least two valve-like mechanisms that keep the coffee flowing through the lid. There seems to be at least three input/output(s) to the lid. At the top of the lid is a dome that connects to the main lid body on four stubby legs. Below the dome is a pathway for coffee to drip onto the lid and pass down into the carafe. There must be several obscured holes under the dome to permit that to occur.
There is a gadget shaped roughly like a top under the dome, and trapped beneath the dome. The gadget is loosely anchored to the bottom of a chamber below the dome. My guess is that the gadget prevents vapor and heat from escaping the carafe. Nevertheless, the gadget, and the chamber floor tend to be a collection point for ground coffee that escapes the filter. The ground coffee builds over successive brewing sessions and undoubtedly comes to block the holes or otherwise causes the carafe to overflow.
After about 30 brewing sessions, this lid needs to be cleaned. Through the use of toothpicks, and vigorous shaking, I was able to get about a teaspoon worth of ground coffee out of this lid. My sense is that routine shaking, under a running faucet or with other water sources, can keep the dome area relatively free of coffee.
A clean dome area can allow the glint of light under the top-like gadget, as it seems that this area under the dome is smooth. You probably won't see this glint if you rely on ordinary overhead lights at night.
I will verify that this solution keeps the flooding from recuring.
The half dome ball floats when in a ring of water. There is a compartment below the ball that can also accumulate coffee silt. Once the dome is "shiny" you can continue to fill the lid with water, shake until empty and junk comes out. I used a basketball air filler needle attached to an air compressor. This made it much faster to clean (but it still needs rinsing afterwards.) I also put an air filter on my compressor to remove compressor oils in the compressed air. I then soaked the lid to additionally remove the threat of oils from the compressor.
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My coffee pot was leaking over the carafe and onto the warmer. I found that this issue was caused by the carafe lid. The lid was not allowing coffee to flow into the pot fast enough. I removed the inner mechanism from the carafe lid (it pops off really easily) and just sit the lid on top of the pot while brewing, and no more leaks! After brewing, I put the mechanism back onto the lid and twist lid onto the pot.
overflow problem possible causes: 1) water is over the "10" marker, 2) no filter in basket 3) too much (or too fine) of coffee in the basket -- does not drain. Also make sure the "spring" on the bottom of the basket is not stuck (the one that lets you remove coffee carafe without dripping coffee.
It sounds like the water isn't flowing through the coffee grounds correctly. Perhaps you don't have the right kind of filter installed (either the right-sized paper filter, or the "gold" filter that comes with the machine) ... or, if uising pre-ground coffee, and if the coffee is all in a pile in the middle of the basket... the water will follow the path of least resistance, so much of it may run "downhill" and around the coffee, through the filter and into the carafe, without passing through the coffee. (That would be more likely if you're brewing only a few cups rather than a full pot.) Or, you might not be using enough coffee; I would use about 7-8 tablespoons of ground coffee for 10 cups of water. I'd recommend getting it working properly with pre-ground coffee before trying the grinder. It's also important that the lid of the carafe is in place while brewing, and that the carafe is fully seated in its chamber; the bump on top of the carafe's lid triggers a spring-loaded mechansim on the bottom of the basket, which regulates the flow of water into the carafe... so if any parts of this system aren't lined-up right, you may get unexpected results (including, in some cases, water all over the countertop).
I also recall, once upon a time, using one of those pre-packaged "packets" of coffee... sort-of like a large tea bag full of coffee grounds... and getting unsatisfactory results; again, the water found it easier to run over/around the coffee packet, rather than through it.
If you are noticing the water that is leaking at the base, I was having the same problem. If you can specifically see that the leak is coming from between the basket and carafe - then you may have a different problem. My problem appears to be that the heating element is shot - it leaks when you start the brewing cycle. I found this out by taking off the bottom and raising up the coffee maker and puting it on a mirror to view what was going on. As soon as the brewing starts and the system is under pressure, water starts forming on the metal tubing part of the heating element. I suppose it's possible that water is leaking down from the tubes, but it looks like it is getting forced out of the metal, so there must be small holes, caused by corrosion. I will check further but I can't find a replacement heating element online so I may have to purchase a new coffee maker.
once and a while the filter door will come ajar and make the coffee leak all over. (allways try to jigle it open after closing, because fine grounds will make the door not close right) Also if the carafe is not in all the way you'll geta mess too!
I was once able to disassemble the top of the carafe and clean it thoroughly. I've had these clogging problems before, and it has not been the filter chamber that is the problem, but the vent in the carafe being clogged. When the air from the inside of the carafe can't be displaced faster than the coffee is draining in, the coffee stops draining into the carafe, fills the top, and spills over the side.
Will probably end up buying a replacement lid, as I can't figure out how to open the top without destroying it. I must have gotten lucky the time I was able to take it apart.
I have had success with putting a small amount of liquid dishwasher soap in the carafe. Then, I fill it with water. I let it set for a few hours. Then, I rinse the carafe out and follow up with a regular washing - cloth and warm water. It is sparkling when I am done. I find that I don't have to do this often.