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I'm experiencing an issue with a small safe box that features an LCD display. The problem is that the master key is not turning, which prevents me from accessing the contents inside. However, I can use the emergency key successfully. I need assistance to unlock the safe and resolve this issue effectively. Could you please provide guidance on how to handle this situation? Any troubleshooting steps or information about unlocking mechanisms would be greatly appreciated. If there are specific tools or methods required to assist with the unlocking process, please let me know. Thank you for your help in resolving this matter promptly.