Tip & How-To about Panasonic SC-HT520 System
Try first unplugging unit from main, and holding the cancel button.
If that does not work try the following:
Hold at the same time the stop button on the main unit and key >10 on the remote control at the same time for about 5 seconds, until you get the word "initialised" on display. This will reset the unit to factory settings.
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