7 double din in dash gps/dvd problem

Hello this is my first post and I hope anyone has a solution or know whats the issue. The problem with the unit in the title is the following:     *No Video on main screen. When I power on the unit, the screen is blue. When the unit is in (Radio,Aux,TV,DVD,CD) the screen is blue, I can hear audio perfect but no video. BUT: when I click in the GPS the screen works perfect, I can even watch movies with an SD card through the GPS menu. If you think you know what could be wrong please help. The video wire is grounded so is not the issue.

if the radio is on....blue screen, or...does it display as it should.The RIGHT way is the ONLY way.

When the radio is on the screen is blue it only works fine on GPS mode.

what make and model again please.The RIGHT way is the ONLY way.

I am willing to bet it has no brand name.

The radio is no brand,here is a link to it http://www.lunarsources.com/car-electronics/48-7-touch-screen-2-din-in-dash-car-dvd-player-built-in-gps-dual-zone.html

i mean the display for the fm radio.... should be the default...limp home mode. if that doesnt work and no RESET. then i would hope there is a warranty.The RIGHT way is the ONLY way.

it has reset but don't fix the problem the display is always blue except for GPS menu. FM,AM,CD,DVD,AUX is always blue

If you just bought it then your best bet might be to return it.The RIGHT way is the ONLY way.

does the touchscreen work when it is blue?The RIGHT way is the ONLY way.