COBY electronic TF-TV4209, TF-TV3709 manual Screen, Channel, Monitor

Troubleshooting Guide

Screen

Problems	Solve
Poor picture	■ Is the power cord unplugged? Make sure the power cable is plugged
	in correctly, then press the power of the remote control.
Black picture	■ Check if external input mode is selected
	■ Press [external input selection] and select TV
Lined and flickering picture.	■ Try to use the "Fine Tune" channel adjustment.
	■ Avoid using cordless phones, hair dryers or electrical drills near the TV.
Disfunctioning channels.	■ Check if the channel has been selected correctly.
	■ Try changing the position of the antenna.
Picture with white and	■ Check if your antenna is damaged or any connections are broken.
black dots.	■ Replace your antenna.
Only certain channels are in	■ Check if the program is being broadcast in “black and white”.
black and white	■ Check the color hue or contrast settings.
The Sub-Screen is black.	■ Check the power of the external device connected to the TV.
	■ If the power cord is disconnected, the screen will be black.

■When turning off your TV, you need to use the remote control or

Automatic turn-on is inactive. press the power button on the TV. (If you pull the plug on the TV,

	the settings will be deleted.)
Channel
Problems	Solve
The channels are not	■ Connect the antenna connectors again.
	■ Set to memorize channels in the automatic channel setting again.
functioning.
	■ Query the particular broadcasting station.
A limited number of channels	■ Change the location or direction of the antenna.
	■ Try to select a few channels using numbers and memorize them
are not functioning.	using the add/delete button.
	■ Query the broadcasting station.
Only UHF (14 ~ 69) Channels	■ Check if the antenna is able to receive UHF.
are unavailable.
Monitor
Problems	Solve
The PC Screen continually	■ Check the connection between the TV and the computer and see
appears and disappears.	if the connector is locked.
	■ This happens if the signal from the video card is too much for the
A “There is no signal”	maximum resolution or frequency of the TV.
	Try to set the maximum resolution or frequency for the TV.
message appears.
	■ See if the PC is in power save mode.
	(This is deactivated when any key is pressed or the mouse is moved)
The screen is unclear	■ Change the frequency and phase adjustment.
	■ Change the Resolution and frequency to the standard limit.
and blurry.
	(1024x768 @ 60Hz)

ENGLISH

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