Philips 56PFL9954H/12B User Manual page 260

6.4 Picture
LightGuide is on but there is no picture
• Verify if the antenna is connected properly.
• Verify if the correct device is selected.
The sound is on, but there is no picture
• Verify the contrast or brightness setting in the menu.
The TV picture is poor
• Verify if the antenna is connected properly.
• Non-earthed audio devices, neon lights, high buildings
or mountains can influence the picture quality. Try to
improve the picture by changing the position of the
antenna or placing devices away from the TV.
• Verify that the correct TV system is chosen in the Manual
installation menu.
• If only a certain channel is poor, try to fine tune this
channel with the Fine tune menu. Read Setup > Installation
> Analogue: manual installation.
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