I have been using my mazzer mini b for almost 2 months without a problem. I have never turned the grind really fine and have kept it close to the start point since I got it. All of a sudden today the machine stopped grinding. When I push the button nothing happens. The light for power on the side is illuminated. Anyone have any advice? Thanks

if you loosen up the burrs, and there is no movement, the problem is likely to be electrical. The fuses may be blown, but that may not be the issue so do not bypass your fusible links with wire. There may be a loose connector or a bad capacitor, but it may very well be a broken winding in the coils for your motor. This is especially likely if the problem varies with temperature. It may also be revealed due to intermittency, although a bad connection will also do that. If you have the schematic and are handy with a soldering iron, it shouldn't take you more than an hour and a few dollars to fix.

I'd start by removing the upper burr carrier (see these cleaning instructions and optionally reassembly hints for details). Note: If you press the power switch and the burrs don't turn, immediately turn the grinder off to avoid overheating the motor. Hopefully it's something as simple as gummed up burrs, but I have only seen this happen once and not with a Mazzer.

Before conducting open grinder surgery I'd suggest a few simple steps to rule out minor causes. First, unplug the grinder. Next, remove the hopper. Now, reach inside the throat with your fingers and see if you can turn the burrs by hand. If not, your motor may be fine but you have something (hopefully not a stone) blocking the grinder from spinning.

I hope it's minor...keep us posted either way

**EDIT** Dan beat me to the punch.

Thanks for all of the replies, I took the hopper off, turned the grinder on it's side and turned the grind adjustment to its coarsest setting, I shook all of the debris (coffee) out of there and magically it is working again. It seems that the machine has some sort of safety mechanism that prevents the burrs from turning when there is enough resistance to cause damage. Does this sound correct? Is is working like a charm now.

UFGators wrote:It seems that the machine has some sort of safety mechanism that prevents the burrs from turning when there is enough resistance to cause damage. Does this sound correct?

No, but glad to hear it's working again.

UFGators wrote:It seems that the machine has some sort of safety mechanism that prevents the burrs from turning when there is enough resistance to cause damage. Does this sound correct? Is is working like a charm now.

It sounds like the burrs were just jammed. I admit I just assumed you would have checked this out. Luckily, it was a simple fix. Hooray! Apparently you tripped the thermal cut off switch, which opened the circuit when the burrs jammed to prevent damage to the motor which would otherwise burn out. Most UL rated appliances like blenders and such will have a circuit breaker like this.

I would bet that what happened was grinds getting stuck behind the grid inside the exit chute. If you grind fine, have greasy beans or just are out of luck the grid can form a super thick block of grinds that eventually stops the grinder from spinning. It has happened to me several times.

The easiest way to solve it is to use sturdy needle to dig out the grinds from the chute. You need to remove the finger guard to do it, but who's going to need it anyway...

Well, naturally because it is the weekend and I can't call any type of tech support, something happened to my mazzer mini E B grinder. I posted awhile back that the grinder stopped grinding, but when I cleaned it out it started working again. This time I have not had the same luck. When the grinder stopped grinding mid cycle I unplugged it and removed the top burr. There was a ton of coffee in there, but the bottom burr turned with ease so I can infer that the machine was not jamming. After cleaning and reassembling, when I push the button to start the grind cycle nothing happens. Can anyone please help me resolve this? What could possibly cause this machine to do this? a loose wire inside? The machine did not appear to be struggling before it shut off, could this be the motor? How would I know? Please help me out, I have tons of coffee on the way. thanks

-Jordan



...merged with previous thread by moderator...

Take off the hopper, set down a towel, and turn the grinder (unplugged!) over on the towel so it's upside down. take off the legs (they unscrew) and, if it's there, the big flathead screw between the front legs. Now you can set the grinder on its side, holding the bottom plate to the body as you do, and then carefully pull the bottom plate away, careful not to pull any wires apart. Have a look for yourself. Any apparent damage to the wiring? Anything obviously wrong? If you have a camera, snap some photos.

It's fairly unlikely that the motor is shot, and more likely that it's a wiring problem, or a control problem.