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Screen issue
I see red, green, and blue.
defective.
Contact a Samsung Service Centre to resolve the issue.
The display looks unstable and then freezes.
The screen may freeze when a resolution other than the recommended resolution is used or
resolution.
The screen cannot be displayed in full screen.
Change the screen size setting to full screen on the product or source device.
Sound issue
There is no sound.
Check the volume.
The volume is too low.
sound card or software programme.