I have a proline tvd 1550f tv/dvd model.Recently the dvd player stopped working,so i took out the four cover cover screws to have a look inside to see what was wrong.Having looked and then putting back together the tv will switch on but there is now no picture on the screen for normal tv or dvd, why is this?is there some kind of a reset switch/button within the unit you have to press to reset unit?please help||

Craig, July 2010