Samsung CS21A530FL Service Manual page 17

Troubleshooting
5. Channel
There are no channels available.
Some channels are not available.
Only the UHF (14-69) channels are not available.
6. Others
The TV makes a noise as if something is dropping
inside.
4-4
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Problem
Problem
manuals search engine
Solution
■ Check if the antenna is properly installed.
■ Press the Auto Channel button to store channels.
■ Contact your local broadcasting service station.
■ Adjust the position, angle or direction of the antenna.
■ Activate the Reception Sensitivity Boost feature.
■ Contact your local broadcasting service station.
■ Use the number keys to select a specific channel and press Store/Clear
to memorize it.
Check if the antenna is able to receive UHF signals.
Solution
This noise may occur when the plastic material inside the TV expands or
contracts according to the seasonal temperature or humidity. This is like the
noise from a furniture/cabinet/sink unit, and there is no need for concern.
Samsung Electronics