: Insert fresh alkaline batteries (usually AA, C, or D depending on the model) following the (+) and (-) markings.
The light sensor is activated. Solution: Look at the clock face or near the 6 o’clock position. Find a small, bulging glass or plastic dot (the photocell). Shine a bright flashlight directly on it for 10 seconds. Then manually turn the minute hand past the hour. If the music plays, the sensor works. To disable it permanently (cover it with black electrical tape), but this may drain batteries in 24 hours. Instead, search the manual for "Night Off Switch" – usually a sliding switch on the back. small world rhythm clock manuals