BenQ DV3750 user manual Troubleshooting, Symptoms Possible Causes

Troubleshooting

Before calling a service center, attempt the following steps to diagnose the problem.

TV

Symptoms					Possible Causes
Power does not turn ON	Ensure the power plug is securely inserted into the receptacle
	and wall socket.
	• Ensure the display power is ON (Indicated by the green
		Power indicator on the front of the unit)
There is no picture or sound	• Try a different input source to check whether the source is at
		fault.
	• Check for mis-connection of cables or for wrong input
		source.
	Your TV is being affected by interference from automobiles,
There are spots on the screen	trains, high-voltage transmission lines, neon signs or another
	sources of interference. Try redirecting or relocating your
	antenna to reduce the affects of the interference.
	• Check whether all the picture adjustments have been
Degraded colours or tints		properly performed.
	• Press the				(Picture mode) button on the remote control
		to select a		different picture mode.
Improper screen position or size	Try selecting a different aspect ration by pressing the					/
			(Screen aspect ratio) button on the remote control.
The image appears distorted	Ensure the display's aspect ratio is correctly set to suit the
	program source.
The image appears too bright,	• Reduce the contrast setting.
and there is a loss of definition	• The DVD player is set for a high-level output.
in the brightest areas of the	• The AV video signal has not been terminated properly
image.		somewhere in the external AV equipment.
The image appears too 'washed	• Reduce the brightness level till the black areas of the picture
out', or the darkest areas of the		appear as black.
image appear too bright.	• The DVD player may be set at too high a brightness level.
	• Check the PC/DVI cable for disconnection.
Power indicator lamp flashes	• This indicates the PC/DVI input has been selected with no
red.		PC/DVI source signal.
	• The TV has been placed in PC Standby mode.
"Out of range" appears	• Check whether the input signal is acceptable to the display.
	• Check for incorrect battery orientation.
	• Check for dead batteries
	• Check your distance and angle from the display.
	• Check whether remote control is properly being pointed at
		the display's remote control sensor window.
Remote control does not func-	• Check for any obstacle between the remote control and the
		remote control sensor window.
tion properly	• Check that the remote control sensor window is not under
		strong fluorescent lighting.
	• Check for any devices (PC or personal digital assistant,
		PDA) nearby that transmit infrared signal which may cause
		interference to signal transmission between the remote
		control and the LCD display. Turn off the infrared function
		of these devices.

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Troubleshooting 29