Distorted sound.

• Check the antenna (aerial)/cable connection.
• Keep the antenna (aerial)/cable away from other connecting cables.
• Keep the TV away from electrical noise sources such as cars, hair-dryers, Wi-Fi units, mobile phones, or optical devices.
• When installing an optional device, leave some space between the device and the TV.
• Select [Channels & Inputs] — [Channels] — [Channel setup] — [Analogue] — [Manual programme preset] and set [Audio filter] to [Off], [Low] or [High] to improve sound for analogue reception.