Literally nowt. Plug in, fuse checked apparently. Power on and grind button pressed delivers no sound or sense that motor is straining.
Can rotate burrs freely by the nut on top with a spanner - shows resistance, but not so much that would seem unreasonable.
Don't know what the electronics look like on those but assume they're fairly simple. Start with a visual check for blown components or bad solders then break out a multimeter and do continuity checks. Probably a good chance it's a dead motor.
Literally nowt. Plug in, fuse checked apparently. Power on and grind button pressed delivers no sound or sense that motor is straining.
Can rotate burrs freely by the nut on top with a spanner - shows resistance, but not so much that would seem unreasonable.