Troubleshooting; Troubles And Solutions - Sony Bravia OLED KD-77AG9 Reference Manual

Troubleshooting

General troubleshooting for issues like: black
screen, no sound, frozen picture, TV does not
respond, or network is lost, do the following
steps.
1
Restart your TV by pressing the power button
on the remote control until a message
appears. The TV will restart. If the TV does not
recover, try unplugging the mains lead. Then
press the power button on the TV and wait for
two minutes, and plug in the mains lead.
2
Refer to the Help menu by pressing HELP on
the remote control.
3
Connect your TV to the Internet and perform
a software update. Sony recommends you to
keep your TV software updated. Software
updates provide new features and
performance improvements.
4
Visit Sony support website (information
provided on the front cover of this manual).
When you plug in the TV, the TV may not be
able to turn on for a while even if you press
the power button on the remote control or
the TV.
It takes time to initialize the system. Wait for
about one minute, then operate it again.

Troubles and Solutions

When the illumination LED is flashing in red.

Count how many times it flashes (interval time is
three seconds).
Reboot the TV by disconnecting the mains lead
until the illumination LED stopped flashing in red,
then turn on the TV.
If the problem persists, disconnect the mains
lead, and contact your dealer or Sony service
centre with the number of times the illumination
LED flashes.
Terrestrial/cable service cannot be received.

Check the antenna (aerial)/cable connection and
booster settings.

Select terrestrial/cable service by pressing TV on
the remote control, and then select [Digital] if the
broadcasting service is not displayed.

Terrestrial signal might be suppressed if there is a
strong signal supplied nearby. Set [LNA (CH ---)]
to [Off] in digital tuning settings.

After moving to a new house or trying to receive
new services, attempt a service search by
selecting [Digital tuning].
Satellite service cannot be received.

Check the satellite cable connection.

When [No signal. LNB overload detected...]
message is displayed, unplug the mains lead.
Then, ensure the satellite cable is not damaged
and the satellite signal line is not short-circuited
in the satellite connector.
The remote control does not function.

Replace the batteries.
The parental lock for broadcast password has
been forgotten.

Enter 9999 for the PIN code and select [Change
PIN code].
The TV surrounds become warm.

When the TV is used for an extended period, the
TV surrounds become warm. You may feel hot
when touching there by the hand.
The screen becomes darker while watching
TV.

If the whole image or part of the image remains
still, the screen brightness will be gradually
reduced to prevent image retention. This is not a
malfunction of the TV.
You are concerned about image retention.
If the same image is displayed repeatedly or for
long periods of time, image retention may
occur. To reduce image retention, we
recommend that you turn off the TV normally by
pressing the power button on the remote
control or the TV.
Note
• Perform Panel refresh manually only when image
retention is particularly noticeable. As a reference,
perform it only once a year. Avoid performing it more
than once a year because it may affect the usable life
of the panel.
• Images that include clocks, logos and bright colours
(including white) easily cause image retention. Avoid
displaying these types of images for long periods of
time, otherwise image retention may occur.
A white line appears on the screen.

Panel refresh automatically runs after the TV has
been used for long periods of time to reduce
image retention. Panel refresh starts after the TV
is turned off and takes about one hour to
complete. A white line may be displayed on the
screen during the Panel refresh. This is not a
malfunction of the TV.
GB
11
GB