Troubleshooting Guide

If you are having problems with using the TV, please consult this guide below. If this guide does not help resolve the problem, please contact Technical Support by phone at 1-800-681-2629 or 718-416-3197, or by email at techsupport@cobyusa.com. Our hours are Monday to Friday, 8:30 AM–8:30 PM EST and Saturday to Sunday, 9:00 AM–5:30 PM EST.

Setup and Connection

Problems

Solve

The TV won't turn on.

Check your power cable connection.

 

 

I can't view the Basic channels.

Check the connection of the antenna cable.

 

 

I want to view cable channels.

Register with your local cable company then connect their receiver to your TV.

 

 

I want to view satellite channels.

Set up your parabolic satellite antenna then connect your satellite receiver to the TV.

 

 

Digital broadcasting is not

Check your antenna cable connection.

functioning.

Check if the digital channel selection is correctly connected to your antenna cable.

 

 

Menu and Remote Control

Problems

Solve

 

Press [input selection] to select the device to play.

 

Change the batteries.

The Remote Control isn't

Check the polarity of the batteries.

Check the angle of the remote control from the product or if there

functioning well.

are any obstacles between the remote control and the product.

 

Check if you have pressed the correct key for the correct option.

 

Avoid positioning bright lights near the TV that shine a strong light

 

on the TV remote sensor.

 

 

I cannot change channels with

Press [input selection] and select <TV>.

Try to use the remote control for the cable or satellite receiver to

the remote control.

change the channel.

 

 

 

External input channels cannot

Check your external input connection cable.

be selected.

 

 

 

A Menu cannot be selected.

If a menu option is grayed out then the option is currently not applicable.

 

 

Sound

Problems

Solve

Poor quality sound

Check if the program is in stereo.

Stereo may not work well in areas with bad reception.

 

Try using Mono for these areas.

 

 

 

Check your sound connecting cable.

 

Check if other channels also have no sound.

Sound is malfunctioning while

If there are images but no sound, press the volume buttons to increase the sound.

Press the volume buttons to increase the sound.

using a cable.

Try watching a video (if the video has sound, check your cable company).

 

 

If there is no problem with the cable receiver, then call our customer service.

 

Check if the internal speakers are <OFF>.

 

 

 

Try to adjust the external devices connected to the TV

There is a malfunction after

(Digital channel receiver, DTV, DVD, Cable channel receiver, video)

the volume is increased

If you can adjust your sound, try to balance the volume of the

 

TV and the external device.

 

 

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COBY electronic TF-TV3709, TF-TV4209 manual Troubleshooting Guide, Setup and Connection, Menu and Remote Control, Sound