Someone PLEASE HELP!!!

I love my 52 inch GE D52GW12 HDTV Rear Projection Big Screen TV.   WOOOOOO!!!!!  OK...Well i replaced the flyback transformer a month ago and the TV was perfect.  Now the TV has been Blinking and then going black no video but all sound.  Today the Screen was real real Bark Blue and then faded to black.  I NEED HELP.  I am a Do it Yourselfer guy so i wont bring it to a professional because i know i can fix it.  I just need to know what to look for and where to look for it.  Can anyone tell me where i can get a service manual or circuit diagram for my tv???  Or if anyone knows exactly what it is please help me im in desperate need of help.   I will not throw my tv out and will not take it to a professional. SO PLEASE ANYONE WHO CAN HELP I WILL GREATLY APPRECIATE IT!!!!