JVC LT-39C740 Instruction Manual page 46

Technical Information and Help
9
The audio function does not work.
Picture OK but no sound
No output from one of the speakers
Unusual sound from inside the TV
No sound when connecting HDMI
Audio noise
Password
Lost password
There is a problem in PC mode.
The signal is out of range (Invalid
format)
Vertical bar or stripe on background
& horizontal noise & incorrect
position
Screen colour is unstable or shows a
single colour
Smart TV isn't working
Can't access Smart TV
Smart TV is very slow to activate
Skype isn't working
FAQs (Frequently Asked Questions)
Why have I lost some / all of my
channels?
Why do I get 'blocking' on my digital
picture?
Can I watch Freeview using a
portable set-top aerial?
What type of aerial do I need?
46
LT-39C740_IB.indd 46
• Press the VOL + / – buttons.
MUTE button.
• Sound muted? Press the
• Try another channel. The problem may be caused by the broadcaster.
• Adjust the Balance settings in the SOUND menu.
• A change in ambient humidity or temperature may result in an unusual noise when
the TV is switched on or off and does not indicate a fault with the TV.
• Check if the input source is HDMI1, 2 or 3.
• Keep the RF coaxial cable away from other connected cables.
• Select the Set Password setting in the LOCK menu, then enter the following master
password "4725". The master password clears your previous password and allows
you to enter a new password.
• Adjust the resolution, horizontal frequency, or vertical frequency.
• Use Auto configure or adjust clock, phase, or H/V position.
• Check the signal cable.
• Reinstall the PC video card.
• Check you are connected to your router and that the router is switch on and
working.
• Your router may be to far away from your TV, move your router closer to your TV.
• Try connecting your TV to your router using an ethernet cable.
• Your internet speed may be very slow, check your speed with your internet provider.
• You need to buy the Digihome TV camera to use Skype to video chat or call friends
and family. The camera can be purchased from currys.co.uk
Model: Vesca 100, SKU: 100420
• Both parties must have a fast internet connection for Skype to work properly, check
your internet speeds.
• It happens sometimes if you have a weak signal. Usually it just means you'll need to
re-tune your TV. Don't worry, it is easy to do. And once you've done it, you should
get all the Freeview channels available to you. If problems persist you may need to
get your aerial checked. Talk to your retailer or contact your local aerial installer.
• In most cases, blocking is caused by a reception problem – either the signal is too
weak or there is some kind of interference. Talk to your retailer or contact your local
aerial installer.
• Blocking can also be caused by a digital signal that is too strong. If you are still
experiencing blocking and the signal is strong, consult your local aerial installer
for advice.
• Some, but only a few, homes may be able to use a set top aerial. However, for a
much better reception, we strongly recommend that you use a rooftop aerial.
• If you do not have access to a rooftop aerial – for example, if you rent a flat and
the aerial is the responsibility of your landlord, or if you're using a second TV in
the bedroom and don't want the hassle and expense of using extension cables,
a set top aerial may be your only option.
• If you are installing a new aerial, we recommend a wideband rooftop aerial rather
than a loft aerial. Loft aerials generally receive a weaker digital signal and are more
likely to get interference from other electrical devices at home. We suggest you
have an aerial survey done before getting an aerial upgrade.
• Talk to your retailer or contact your local aerial installer.
17/07/2014 09:47