Troubleshooting-Gaggia-MDF-Fuse

1. First plug the machine into another outlet. Make sure the machine is the only device on the outlet, and that the outlet works with other appliances.
2. Try backing out the grind to a coarse setting. If the burrs are too close together they will not be able to move.
3. If the machine still is not working then there may be a loose wire or a fuse has blown and will need to be replaced. If the fuse has blown it is typically because the machine experienced a power surge or was mishandled. If the burrs are too close together, or and adjustment is made in the finer direction while the machine isn't running, it can cause the burrs to seize and the motor to strain and overheat causing the fuse to blow.
   1. Remove the bottom cover of the grinder, part 2 on the diagram. To remove the cover remove the four screws on the bottom, listed as part 38 on the parts diagram. Older models use regular T10 Torx screws, while newer models will use a T10 Security Torx screw style.
   2. You will be able to access the motor once the cover is removed. Check to make sure the terminals on the motor and the power switch have wires attached to them.
   3. Unclip the circuit board from the motor by pulling the circuit board down towards the bottom of the grinder, then pressing outwards slightly on the white retaining clip that sits just above the board on the left side when the board is on top of the motor. The whole board will come out of the bracket, and you can rotate it to better access the fuse.
   4. Using a flat head screwdriver, give the screw cap on the fuse holder a slight turn, and it should release. The fuse will be in the small holder under the cap.
   5. Next inspect the fuse to see if it burned out. The fuse is attached to the circuit board on the side of this motor, listed as part 6 on the diagram. The fuse looks similar to a Christmas tree light fuse. Remove the fuse from the circuit board; it will simply slide out. Hold the fuse up to light. There should be a thin filament running through it. If the wire is broken or not present the fuse will need to be replaced. You may also notice burn marks on the fuse if it is broken.
   6. A replacement fuse can usually be purchased through an electronics store such as Radioshack. They have the fuse listed as part number 2701052 in their system. Make sure it is the 2.0 Amp 250V fast acting type.
   7. Reassemble the grinder and make sure the grind is set to the coarsest setting. Add beans back in and test the machine.
   8. If the beans grind correctly on this setting slowly move the grind setting to the desired position. Only adjust the grind size while the grinder is running or you risk jamming the grinder or blowing out the fuse again.