Troubleshooting, Problem Check item | DiBoss LT-40H6MVH, LT-40T6MVH

Troubleshooting

Problem

Check item

	No picture on screen and no sound	• Make sure the remote control is not in the standby
	No picture on screen and no sound	mode (The POWER/Standby indicator is red.)
	from speakers.	• Turn on the MAIN POWER button on the top of the
		display.

		• Check the brightness setting of the display.
	No picture/No picture from AV	• Lamp may have malfunction.
	terminal.	• Make sure a cable with no VIDEO input signal is
		connected to the S-VIDEO INPUT terminal.

		• Check the sound setting.
	Picture is displayed, but no sound	• Make sure the sound is not muted.
	Picture is displayed, but no sound	• Make sure the connectors of the optional speaker
	from the speakers.	• Make sure the connectors of the optional speaker
	from the speakers.	system are securely inserted.
		system are securely inserted.
		• Make sure the setting of AV OUTPUT terminal

	Picture is too light	• Make sure COLOR and CONTRAST settings.

	Picture is too dark.	• Make sure BRIGHTNESS setting is not set too low.
	Picture is too dark.	• Check to see if BRIGHTNESS setting
		• Lamp may have malfunction.

		• Change the batteries.
	Remote control does not work.	• Make sure the infrared transmitter window is not
	Remote control does not work.	receiving strong light such as light from fluorescent
		receiving strong light such as light from fluorescent
		lamps.
	No picture from AV OUT terminal.	• Make sure AV INPUT is not set.
	No picture from AV OUT terminal.	• Make sure the input source other than AV
		• Make sure the input source other than AV

	The picture is not sharp.	• The reception may be weak.
	The picture is not sharp.	• The state of the broadcast may also be bad.
	The picture moves.	• Make sure the antenna is facing the right direction.
		• Make sure the outside antenna is not disconnected.

	The picture is doubled or tripled.	• Make sure the antenna is facing the right direction.
	The picture is doubled or tripled.	• There may be reflected electric waves from
		mountains or buildings.

		• There may be interference from automobiles, trains,
	The picture is spotted.	high voltage lines, neon lights, etc.
	The picture is spotted.	• There may be interference between the antenna cable
		• There may be interference between the antenna cable
		and power cable. Try positioning them further apart.

		• Is the unit receiving interference from other devices?
		Transmission antennas of radio broadcasting stations
	There are stripes on the screen or	and transmission antennas of amateur radios and
	color fade.	cellular phones may also cause interference.
		• Use the unit as far apart as possible from devices
		that may cause possible interference.