Image on screen is very dark
1. Check the brightness level on your TV has not been set to dark.
For more information, see the How to change the picture mode topic.
2. In a darkened room shine a torch onto the screen. If you can see an image on the screen there is a backlight issue.
If the product is within warranty, contact your retailer. If the product is outside of the warranty period, either contact Argos technical support or a qualified repair service.