The TV is making a humming noise even when sound is turned off.

Your TV utilizes high-speed switching circuits and high levels of electrical current, and depending on the brightness level being used may seem slightly noisier than a conventional TV.
Your TV has undergone strict quality control procedures that meet our demanding performance and reliability requirements. Some noise coming from the TV is considered normal and is not an acceptable cause for an exchange or refund if we find that unit operates as per manufacturing specification.

You can download the user manual from our Manuals & Downloads page. For all other queries or further technical assistance, please call Samsung Customer Care New Zealand on 0800 726 786 or Live Chat with our New Zealand Technical Team online, services are open 24 hours, 7 days.