What's wrong with the electronic wall clock for perpetual calendar?

The trigger circuit is abnormal, the time-telling chip is faulty, and the horn is faulty, all of which will lead to the failure to tell the time normally.

Methods to adjust the sound normally:

You can log in to the window control panel-turn on the sound and audio device-click the sound-click the event that needs to change the sound among the program events-click the browse button below-find the required sound file-and make sure. Note that xp system only supports wav format. If it is another version of windows, please pay attention to the difference. Finally, apply and determine. You can also download the Windows Optimizer, which can be changed directly.