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Technical Information and Help
There is a problem in PC mode.
The signal is out of range (Invalid
format)
• Adjust the resolution, horizontal frequency, or vertical frequency.
Vertical bar or stripe on background
& horizontal noise & incorrect
position
• Use Auto configure or adjust clock, phase, or H/V position.
Screen colour is unstable or shows a
single colour
• Check the signal cable.
• Reinstall the PC video card.
Smart TV isn't working
Can't access Smart TV
• 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.
• You must accept 'PORTAL AND APPLICATIONS' and 'INTERNET CONNECTION' to be
able to access any smart functionality on your TV.
Smart TV is very slow to activate
• Your internet speed may be very slow, check your speed with your internet provider.
Some of the Apps have disappeared
or changed
• The Apps on your TV may have been updated or even removed this can happen at
any time. Its normal and not a fault of your TV.
FAQs (Frequently Asked Questions)
Why have I lost some / all of my
channels?
• 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.
Why do I get ‘blocking’ on my digital
picture?
• 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.
Can I watch Freeview using a
portable set-top aerial?
• 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.
What type of aerial do I need?
• 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.
JVC 49' LED Smart HD TV LT-49C790 Manual.indd 58
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