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Troubleshooting, The causes of interference – Hyundai H-LCD3202 User Manual

Page 14

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14

Troubleshooting

Before calling a technician, please check the following items to see whether you can easily diagnose and fix
the encountered symptoms on your own.

Symptoms

Possible Cause

Correction

No picture, no
sound, and no
indicator light

The power cord is not plugged in.
Contrast, brightness, sharpness, color and
volume are all in the minimum value or
TV is in mute mode.

Plug the power cord in.
Alter the value of contrast, brightness,
sharpness, color and volume.

Picture and
sound with
abnormity

Contrast and color are set improperly.
Color system is set improperly.
Sound system is set improperly.

Set the value of Contrast and color
properly.
Set the sound system properly.

Picture is spotted
or with snow

Signal source is low-grade or the signal is
in a lower quality.

Use the qualified signal cord.

Blue background

No video signal or the signal cord is
improperly/not connected.

Connect the signal cord properly.

PC Picture is not
in the middle of
the screen

Picture is not well adjusted.

Press the CH+/CH- buttons at one time to
adjust it.
Adjust H/V- position manually to adjust it.

No sound

No audio signal or the signal cord is
improperly/not connected.

Connect the audio signal cord properly.
Set the sound system properly.

The RC does not
work

Batteries are improperly installed or
exhausted.

Make sure the positive and the negative
polarities are correct.
Reattach the battery lid.
Replace the batteries.

The causes of interference

Incorporated in your TV receiver are the most up-to-date devices to eliminate interference. Local radiation
however, can create disturbances, which visibly affect your picture. Proper installations, a good aerial are
your best safeguards against these disturbances.

RF INTERFERENCE

Moving ripples across the screen are caused by nearby transmitting or receiving short-wave radio
equipment.

DIATHERMY

Herringbone pattern and partial picture loss can result from the operation of diathermy equipment from
a nearby doctor's surgery or hospital.

SNOW

Weak TV signals from long distant stations result in an instead picture and give the effect of falling
snow. An antenna adjustment or antenna amplifier may be needed.

GHOST

Multiple image, caused by TV signals reflected back from surrounding buildings, hills, aircraft, etc. is
minimized by correct aerial positioning.

CAR IGNITION

Nearby cars and electrical motors can cause small streaks across the picture or make the picture roll.