Troubleshooting - JVC GGT0372-001A-H Instruction Manual

Troubleshooting

If a problem occurs when you are using the TV, check the below troubleshooting guide before calling for repair.
Severe noise or snow
Check the aerial cable and TV connections .
Check the direction of the aerial.
Check the aerial or its cable damaged or not.
Patterns, stripes or noise
Interference caused by devices such as an amplifi er, personal computer,
or a hair drier, Move it away from TV.
Ghosting (Doubling of images)
Interference occurs caused by signal refl ection from mountains or
building. Try to adjust the aerial's direction or use another antenna.
Cannot turn it on
Ensure the power cord is connected to the AC outlet correctly.
Cannot operate the remote control.
The batteries may be exhausted. Replace with new batteries.
Ensure that you are operation the remote control at less than 7 meters
from the front of your TV.
Remote control stops working
Unplug TV, several minutes later plug it in again.
Side control buttons do not work
Switch "Child Lock" to "Off".
Aspect ratio changed unintentionally
Press " " button to return to your settings.
ZOOM
PC screen alignment is off
Adjust the "PC Position" in "PC Setting" of Set Up menu.
Blue screen appears on the screen
Switch "Blue Back" to "Off".
Strange picture when using an external device
If the top of the image is distorted, check the video signal quality itself.
If movement appears unnatural when receiving a signal from a DVD
player, etc. with 625p (progressive-scanning), change the output setting of
the external device to 625i (interlace-scanning).
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Poor picture quality
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Unnatural colour >>
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Noise >> Set to the following functions.
Picture Mode
DigiPure
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Dull picture >> Set to the following functions.
Picture Mode
DigiPure
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Poor sound
Adjust the "Bass" and "Treble".
If receiving a poor signal in "Stereo/I
Adjust the channel reception using "Manual".
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For HDMI signal, wrong screen size in 480p (525p).
Switch "Size" in "HDMI Setting" to "1" or "2".
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For HDMI signal, green and distorted screen
Wait a little for the signal to stabilize when switching the signal format for
an "HDMI" device.
For HDMI signal, No picture / No sound
Use the cable marked with HDMI logo.
--
Check if the device is compliant with HDMI.
Switch "Audio" in "HDMI Setting" to "Digital" or "Auto" for HDMI devices, or
"Analogue" or "Auto" for DVI devices.
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Some functions do not work.
It is not a malfunction. Some functions (dark background) in the menu do
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not work depending on the situation.
Black or white dots appear on the screen.
LCD panels use fi ne dots ("pixels") to display images. While more than
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99.99% of these pixels function properly, a very small number of pixels
may not light, or may light all the time. It is not a malfunction.
No picture, No sound
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Some input do not output from OUT terminal.
Subwoofer, No sound
--
May be signal source is not low frequency bass signal.
--
Check subwoofer cable connected correctly.
Feedback sound symptoms
Keep the microphone away from the TV's speakers.
Echo
Lower the sound level in "Microphone Volume" in order to prevent the echo.
Adjust "Colour" and "Backlight"
Check "Colour System". If "Auto" is selected.
Select the specifi c colour system manually.
: Standard
: On
: Bright
: On
II" switch to "Mono".
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