Dead tv set(no picture,no sound)

I have a Daewoo tv set,model DMQ 2975,which is a dead set.I replaced a couple of few things on the power supply(blown fuse,tx transistor,IC in the power supply),which made the set to come on,standby power supply.But not switching the the horizontal o/p(No picture,no sound).Is there something I did not do right or check?I need advice and also looking for a schematic diagram for this set.It's my mom's tv and I want to fix it for her.I will await for your response.