Check the mechanism is not blocked, undo the screws at the front. Remove the baseplate, there is a 1.25 a fuse attached to it under a black plastic cover. If neither of these thing work, is there a burning smell?
Could be the motor. I imagine it is just the fuse.
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Could be a number of possibilities from the power cord, the switch, any possible safety devices, radio suppressor, any electronics through to the motor brushes.
A 4 inch grinder doesn't take long to take apart and this would probably be the best thing to do initially to ensure there are no obvious problems like worn or sticking brushes or poor electrical connections.
I have had this grinder for a number of years. About 3 years ago we moved and upon arrival I plugged it in, loaded some beans and pressed the on button - Nothing. Now I know a little bit about these things & I was sure it was not the motor. I completely disassembled the Burr Grinder. It comes apart by removing the rubber feet on the bottom, then removing the screws under the feet. The top part comes apart by removing the screw from the 4 corners (it is easiest if you remove the timer board first). You need a long Philips screwdriver. Before you do this, make sure you are comfortable messing with electronics etc. The last screw to remove the top is under the grind catcher area directly underneath the timer rheostat. Once I had the top off, there is a small circuit board with the timer rheostat (a liner rheostat, not circular) and the On/Off switch. I measured the resistance of the On/Off switch and there was no difference when I pressed the button, obviously a bad switch. The switch is a small, about0.170" thick switch. I was able to find a switch at Radio Shack that was actually the same except it was thinner. I unsoldered the old switch and found a little piece of solid rubber used for gluing on the bottom of something you don't want marred. It was about 0.95", so it raised the new switch up just enough to make contact with the button on the lid when it was pressed. Attached wires to the new switch, soldered it in, put it back together,and fired it up. Works like a charm.
Most obvious thing to check is the fuse that feeds the motorized assembly. If the fuse is good, how about the switch? Is the motor getting power? If motor is getting power when you depress the switch, then motor is good if it spins - the problem has to be with the gears that the motor is powering to move the roof.
Don't be intimidated. If it was put together by man it can be taken apart. U can do it, just use your noggin and be brave!
There is a button at the front of the grinder usually black or red, depress it lightly and rotate the wheel (unplug grinder please) wait until you feel it fall into spot, depress tightly and hold then turn wheel and unscrew to replace pad. Reverse to reassemble.Good Luck....
There is a second switch, similar to the user accuated switch, which is opposite the user accuated switch when viewed from the bottom of the unit. This second switch is controlled by a piece of plastic which fails when the device overheats. I am currently seeking to replace that part on my unit.To fix the problem you will need to replace this part so that the second switch is closed. Both of the two switches on the bottom of the unit must be closed in order for the unit to operate.
I own a Saeco Incanto Deluxe. It employs the ceramic grinder that has worked flawlessly for 3-4 years. One day it stopped and "Grinder Blocked" appeared. I removed the entire grinder unit, cleaned it thoroughly and calibrated the grinder. This did not fix the problem. After many similar attempts, I found the entire grinder assembly (motor, grinder etc.) online for $149.00. Install of the new assembly took me five minutes and it works perfectly. Please note that the ceramic grinding blades (there are two round ones that must be aligned corrrectly) cost $40 a piece (same site where I found the entire assembly for $149). My suggestion--save yourself the agony and replace the assembly if cleaning and calibration fails.
There are four slots in the bottom through which you can see the attachment clips. These clips are not mounted on the base but clip into the base. There is a special 4 prong tool that is used to depress these but if you don't have one, which you most certainly will not have, you need to use four small nails to open it up. Looking at them from the bottom, the clips look like a capital E with an extra horizontal leg. try to drive your nails in to the middle of the back of the E, that is on the flat side. After you have done this use a claw hammer to pry the bottom off by inserting the claws into the seam between the bottom and the top and twisting until something gives. You will probably get the bottom off without destroying more than one of the clips. No matter, you can tape or glue the ****** back together.
If power lose was your problem, remove the switch from its clip then test it to see if depressing the button causes the contact rod to touch both of the copper plates which are mounted on opposite sides of the switch, be careful while making this test - you have to have the grinder plugged in and you do not want to be touching any electrical contacts, the blade or the motor. Also beware of the torque from the motor causing you to drop the grinder. Also, beware of the torque from the motor causing you to drop the grinder in the unlikely event that it is working.
If depressing the switch doesn't cause the switch shaft to come in contact with both plates then get a pair of plyers and bend the copper plates down so that contact can be readily be made.
Retest to confirm the fix works then reassemble, using tape, glue or whatever and then -- it's coffee time!!
My grinder went from bad to worse and finally stopped grinding (with the motor still buzzing but absolutely no grinding). Knowing I had to do something or throw it away, I pulled the clear plastic bean reservoir upward and separated it from the grinder body. I looked down the hole where beans go down to the grinder and found packed coffee ground blocking the hole. I cleaned the whole thing, put the reservoir back, and my grinder now works like new :-)