1. Incorrect battery installation: Incorrect battery installation or incorrect battery cover installation. Reinstall the battery and make sure it is installed correctly.
2, poor battery contact: poor battery contact, you can try to clean the battery tank, or gently wipe the battery contact point with a cotton swab dipped in alcohol.
3. Electronic organ failure: The above two problems do not exist, that is, the electronic organ itself fails. You can contact after-sales customer service or maintenance center for maintenance.