The electronic clock of Hongtai calendar shows 0 after power failure.

After the power failure, the electronic clock of Hongtai perpetual calendar shows 0. Check the circuit to see if there is a power failure.

Fault phenomenon: the original time 24-hour system was changed to 12-hour system. Cause of failure: key misoperation. Solution: In the normal display state, press and hold the "Add/Punch" key for three seconds to switch to 24 hours.

The electronic clock of the digital perpetual calendar crashed. Solution: Restart it. 2. Or the transformer is broken. Solution: It is suggested to restore the electronic clock of perpetual calendar to factory settings or replace it with a new transformer.