Hey Avexim,

I'm sorry to hear you've been have the problem with your TV. The forum is actually meant for North American products and customers. Unfortunately, it seems your TV is Czech, so I wouldn't have any information on it; however, I did some research, and I found the support page for this product in your country: http://www.samsung.com/cz/support/model/LE40C570J1SXXH

I'd encourage you to contact the support team there for your issue. I hope you have a good day!

-- HD Tech