I have problem with 220TW9FB. When I use "Automatically install channels", first 4 channels are in position 1-4 and next channels are in position 800 - 836. It's all digital reception. Position 5-799 are blank. Is there any how to solve this problem? Or how to make total factory reset (not only setting, but also channel delete).

Thx for your help

P.S. Sorry for my English