Toshiba 55L7400U, User Manual

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Troubleshooting
Sound problems
Check the antenna/cable connections, see “Connecting a digital audio
system” on page 34 .
The station may be having broadcast difficulties. Try another channel.
The sound may be muted. Press the VOL (+ -) buttons or MUTE button.
If you are connected to a computer using either the PC IN terminal or
an HDMI ® terminal, make sure that the Rear Shared Audio setting is
properly set, see “Connecting a digital audio system” on page 34 .
Remote control problems
Remove all obstructions between the remote control and the TV.
Replace the remote control’s batteries, see
“Installing batteries” on page
44 .
Your TV’s remote control may not operate certain features on your
external device. Refer to the owner’s manual for your other device to
determine its available features. If your TV remote control does not
operate a specific feature on another device, use the remote control that
came with the device, see “Learning about the remote control” on page
47 .
If the TV still does not act as expected, perform the Reset Factory
Defaults procedure, see “Resetting to Factory Defaults” on page 91 .
Channel tuning problems
Ensure that the remote control is set to the correct device mode, see
“Learning about the remote control” on page 47 .
The Auto Tuning feature may have erased the channel from memory. To
add the channel to the channel memory, see “Manual Tuning” on page
66 .
The Lock feature may have blocked the channel. To unblock the channel,
see “Unlocking programs” on page 78 .
If you cannot tune digital channels, check the antenna configuration, see
“Initial setup” on page 49 . If the problem persists, clear all channels
from the channel list and reprogram channels into memory, see “Storing
channels in memory (optional)” on page 65 . For additional information,
see “TV stops responding to controls.” on page 161 . If the problem
persists, use the Reset Factory Defaults procedure, see “Resetting to
Factory Defaults” on page 91 .
Sound problems