red blinking light
Often the tacho is dirty/clogged.
It can be a difficult beast to get to but is at the rear capstan.
Once big screw down the back of the ribbon cable (take care) opens up the tacho and the plate.
Clean with an air brush. Dont bend the splines dont touch the wee bits.
reassemble with care.
Worked for me on four "bad" drives.
Often the tacho is dirty/clogged.
It can be a difficult beast to get to but is at the rear capstan.
Once big screw down the back of the ribbon cable (take care) opens up the tacho and the plate.
Clean with an air brush. Dont bend the splines dont touch the wee bits.
reassemble with care.
Worked for me on four "bad" drives.