Troubleshooting; Poor Picture - JVC InteriArt LT-26C31BC Service Manual

Troubleshooting

If a problem arises while you are using the TV, please read this "Troubleshooting" well before you request having the TV repaired.
You may be able to fix it easily by yourself. For example, if the AC plug is disconnected from the AC outlet, or the TV aerial has
problems, you may think there is a problem with the TV itself.
Important:
• This Troubleshooting guide only covers problems whose cause are not easy to determine. If a question arise when you are
operating a function, read the page(s) corresponding to the operation of the function well, not this Troubleshooting guide.
• After you have followed the Troubleshooting description or the operating description of the functions concerned without any
success, remove the AC plug from the AC outlet and request a repair of your TV. Do not attempt to repair the TV by yourself or
remove the rear cover of the TV.
If you cannot turn on the TV
• Are the AC plug on the power cord from the TV is
connected to AC outlet?
• Make sure to set the VCR/TV/DVD switch to the TV
position. You cannot turn the TV on when the VCR/TV/
DVD switch is set to the VCR or DVD position.
If you cannot turn off the TV
• Make sure to set the VCR/TV/DVD switch to the TV
position. You cannot turn the TV off when the VCR/TV/
DVD switch is set to the VCR or DVD position.
No picture/No sound
• Have you chosen a TV channel whose reception is
extremely bad? In this case, the BLUE BACK function
will be activated, the entire screen becomes blue, and the
sound is muted. In spite of this, if you want to view the
TV channel, follow the description "BLUE BACK" on
page 25 to try to change the BLUE BACK function
setting to OFF.
• Have you set the SPEAKER function to OFF? Follow
the description "SPEAKER" on page 21 to confirm the
SPEAKER function setting to try to solve the problem.
• If the SYSTEM setting for a TV channel is incorrect, it
may prevent the sound from being issued. Follow the
description "EDIT/MANUAL" on page 28 to use the
MANUAL function to try to change the SYSTEM
setting.

Poor picture

• If noise totally obscures the picture (snow), the aerial or
aerial cable may have trouble. Check the following to try
to solve the trouble:
Has the TV and aerial been connected properly?
Has the aerial cable been damaged?
Is the aerial pointed to the right direction?
Is the aerial itself faulty?
• If the TV or aerial receives interference from the other
devices, stripes or noise may appear in the picture. Move
such devices as an amplifier, personal computer, or a
hair drier that can cause interference away from your
TV, or try changing its location. If the aerial suffers
interference from a radio tower or high-voltage wire,
please contact your local dealer.
• If the TV receives interference from signal reflecting
from mountains or building, double-pictures (ghosting)
will occur. Try to change the aerial's direction or replace
the antenna with the one with better directionality.
• Are your COLOUR SYSTEM settings for the TV
channels correct? Follow the description "COLOUR
SYSTEM" on page 20 to try to solve the trouble.
• Has COLOUR or BRIGHT been controlled properly?
Follow the description "Picture Adjustment" on page 18
to try to adjust them properly.
• Videotaping teletext is not recommended because it may
not record correctly.
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• When viewing images from commercially available
video software products, or videos from videotapes
which have been recorded improperly, the top of the
image may be distorted. This is due to the condition of
the video signal, and not because of malfunction.
Poor sound
• Have you adjusted BASS or TREBLE properly? If not,
follow the description "Sound Adjustment" on page 21
to try to adjust them properly.
• When the TV channel reception is poor, it can be hard to
hear the stereo or bilingual sound. In this case, follow the
description "STEREO / I • II" on page 21 to hear the
sound more easily by changing it to a mono sound.
Operation disabled
• Have the batteries of the remote control become
exhausted? Follow the description "Putting the batteries
into the Remote control" on page 5 and replace them
with new batteries to try to solve the problem.
• Have you attempted to use the remote control at the sides
or rear of the TV or at a location more than seven meters
apart from the TV location? Operate the remote control
in the front of your TV or a location less than seven
meters from your TV to try to solve the problem.
• When you are viewing a teletext programme, you cannot
operate the menus. Press the b button to return the
teletext programme to the ordinary TV programme to try
operating the menus.
• If the TV suddenly stops responding, disconnect the
power cord of the TV from the AC outlet. Connect them
to the AC outlet again to turn on the TV. If the TV
returns to a normal state, it is not a failure.