I have got a problem with my TV Philips 28pw662b/05 that is driving me crazy. The problem is that when turning the TV on nothing appears just the blue screen and the sound but no pictures. The TV seems to be locked with some kind of parental control, I checked the child lock and its off and on the menu there is nothing about parental control. I have no idea why it is happening. Some times when trying many times switching it on it works but just until be turned off.

Is there any way to reset the TV to the factory state? Please this problem is very annoying and I cant use my TV. I tried to get the manual on the internet as well but I cant find anywhere.

Many thanks

Marcelo