Troubleshooting; Picture Problem; Sound Problem; Picture And Sound Problem - Toshiba 55Z770KP Owner's Manual

If the TV does not operate as usual or appears to be faulty, please read
carefully this section. Many operational issues can be resolved by users.
It is also advisable to unplug the TV from the AC socket on the wall
for 60 seconds or more, then reconnect and start again. This simple
procedure helps in restoring stable conditions for electric circuits and
firmware of the unit.

Picture Problem

When the TV has a picture problem, please review the list of problems
and solutions below.
Problem Possible Solutions
• Unplug TV from AC outlet and re-plug after
60 seconds.
No picture, or black
• Check that the Saturation is set to 50 or
and white picture.
higher.
• Try different TV channels.
• The compression of video content may cause
picture distortions, especially in fast moving
pictures from sports programmes and action
movies.
The picture is
• If the signal reception is weak or poor, screen
distortion may be visible but it is not a
distorted.
malfunction.
• Mobile phones used close to the TV (within 1
m) may cause noise on analogue and digital
channels.
NOTE
• If the problem persists, check the signal strength or refer to the
external device's user manual.

Sound Problem

When the TV has a sound problem, these solutions may help resolve the
problem.
Problem Possible Solutions
There is no sound
• Check the volume control of the device (cable
or the sound is too
or satellite box, DVD, Blu-ray, etc.) connected
low at maximum
to your TV.
volume.
• Check the volume settings.
Picture is normal,
but no sound.
• Check if 'Mute' mode is set to on.
• Make sure that the audio cable is connected
to the correct audio output connector on the
external device.
The speakers are
making an odd • For antenna or cable connections, check the
signal information.
sound.
• A l o w s i g n a l l e ve l m a y c a u s e s o u n d
distortions.

Troubleshooting

Picture and Sound Problem

When the TV has a sound and picture problem, these solutions may help
resolve the problem.
Problem
No sound and
picture.
I have connected
an external device
to my TV but I get
no picture and/or
sound.
Sound and picture
distorted or appear
wavy.
Sound and picture
is blurry or cuts
out momentarily.

Internet Problem

When the TV has difficulties in connecting to the Internet, these solutions
may help resolve the problem.
Problem
The TV cannot
connect to your
network or apps.
The wireless network
connection failed.
The wireless network
signal is too weak.
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Possible Solutions
• Check if the power cord is plugged into a
powered AC outlet.
• Check to see if the LED light is on or not. If it
is, then the TV is receiving power.
• Press the button on the remote control to
activate the unit from Standby.
• Check whether the connection between the
external device and your TV is correct.
• Make sure you have made the correct
selection of input source.
• Some electrical appliances may affect TV
set. If you turn off the appliance and the
interference goes away, then move it further
away from TV.
• Insert the power plug of the TV set into
another power outlet.
• If you use an external antenna, check the
direction, position and connection of the
antenna.
• Adjust the direction of your antenna or reset
or fine tune the channel.
Possible Solutions
• Make sure the TV has a network connection.
• Contact your Internet service provider.
• Make sure your wireless modem/router is on
and is connected to the Internet.
• Position your wireless router, modem router,
or access point in a central location. Avoid
putting it at a corner.