Olympus PEN E-PM2
|Image stabilization (IBIS) not working.
Red blinking IBIS indicator on the LCD.
Mechanical noise when turning the camera on.
Sensor moves only in one (or no) direction when turning the camera on (during IBIS calibration)
|Most likely, one of the cogs on the stepper motors responsible for the sensor movement came loose from the shaft. It can simply be glued back on. Only the small cogwheel on the motor itself needs to be reattached as the big one is mounted on a rectangular shaft.
It's probably a good idea to always reattach both cogwheels as they tend to fail in quick succession.