Samsung QN90F - The TV Is Making a Humming Noise; The TV Narrates the Screen Events in Voice-Over

The TV is making a humming noise.
Your TV utilises high-speed switching circuits and high levels of electrical current. Depending on the TV's
brightness level, the TV 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.
The TV narrates the screen events in voice-over.
To turn off Voice Guide, move the focus from Accessibility Shortcuts to Voice Guide and then press the Select
button. You can turn on or off Voice Guide. To run Accessibility Shortcuts, see the following:
• Press and hold the (Volume) button on your Samsung Smart Remote or Remote Control.
• Press the AD/SUBT. button on the Standard Remote Control or press and hold the MUTE button.
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