Old and exhausted batteries is the primary cause for the movement to malfunction while keeping time, playing a melody, or swinging the pendulum (on some models). Ensure that you are using brand new alkaline batteries and they are installed following the + and - symbols. Do not mix old and new batteries or alkaline and non-alkaline batteries.

A poor electrical connection on one or more batteries can also cause performance issues. Ensure that the batteries are fully inserted.  Make certain that the + and - battery tabs are positioned completely on the circular metal contact area of the battery ‚Äì not on the outer battery casing.  As necessary, adjust the battery tabs to ensure they are making proper electrical contact with the circular metal contact area of the battery. 

Other issues and possible remedies:

• Pendulum will not swing: To provide proper pendulum operation, it is necessary to ensure that the clock is level side-to-side and front-to-back. Also check that the pendulum is properly located on the pendulum hanger.  Make certain the speaker wires in the closed door position do not interfere with the pendulums swinging motion.  Replace with new batteries.
• Clock is slow: Make certain the hands do not rub on the dial or glass. Make certain the hour and minute hands dont cross or touch. Carefully adjust hands as necessary. Replace with new batteries.

NOTE: Gears in battery-operated movements can not be replaced or repaired, so if new batteries or the troubleshooting suggestions above do not fix the problem, the movement will need to be replaced.

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