TV without remote control?

Guys i have a problem. I have broken my remote control and now have the problem that my Medion television net is more concerned. The only button that is there's the on and off button, when I press it my television goes on, but only shows black. My playstation 4 is connected there, and even if I switched on my television with the remote control, it was already on the HDMI1, but now that I have to do it with the television it doesn't work, someone can help me. What the remote control looks like and which model the television is, I'll show you in the photos

Are there no control buttons on the side either? In my case they are hidden under a cover on the side.

Buy a new remote control.

Do you have the same model?

Firstly, there are still control buttons on the TV guaranteed. Front, bottom or back. Maybe also under cover.

Second, there are universal remote controls that can be programmed for the respective device.

See instructions on page 11, position 5, on the left side of the television:

http://www.medion.com/de/service/_lightbox/handbuch_details.php?did=14840