Samsung 5500 Series - RF(Cable;Antenna) Connection; The TV is not receiving all channels.; No Caption on digital channels.

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Equalizer
Use Equalizer to customize sound setting for each speaker.
Balance L/R: Adjusts the balance between the right and left speaker.
100Hz / 300Hz / 1kHz / 3kHz / 10kHz (Bandwidth Adjustment): Adjusts the
volume level of specific bandwidth frequencies.
Reset: Resets the equalizer to its default settings.