BenQ DV3750 user manual Antenna, Picture is not clear

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There is no picture or sound,	• Make sure the antenna cable is properly connected.
just noise.	• Change channels to confirm if the symptom is still present.
	• Make sure the antenna cable is properly connected.
Picture is not clear.	• Change channels to confirm if the symptom is still present.
	• If PC is selected as the input signal source, use the Auto
	function in the PC Menu to let the TV adjust picture auto-
	matically.
	• Check whether you have selected Mute for Audio setting.
No sound.	• Make sure the volume is not set to minimum.
	• Check the AV cables for disconnection.

Antenna

Symptoms	Possible Causes
The picture is not sharp or the	• The reception may be weak.
	• Change channels to confirm if the symptom is still present.
picture moves contains image
	• Make sure the outside antenna is not disconnected.
movement.
	• Make sure the antenna is facing the right direction.
	• Make sure the antenna is facing the right direction.
	• Picture ghosting is caused by reflections from buildings,
The picture is doubled or tripled.	large metal structures and mountains. Carefully realign
	your antenna to minimise the ghost images. Ultimately a
	higher quality antenna professionally installed may be
	necessary to reduce the ghosting.
	• There may be interference from automobiles, trains, high
The picture is spotted.	voltage lines, neon lights, etc.
	• There may be interference between the antenna cable and
	power cable. Try positioning them further apart.
	• Is the display receiving interference from other devices?
	Transmission antennas of radio broadcasting stations and
There are stripes on the screen or	transmission antennas of amateur radios and cellular
colours fade.	phones may also cause interference.
	• Use the display as far away as possible from devices that
	may cause possible interference.

30 Troubleshooting