Philips projection tv video blacks out.
i have a 2001 model #43P8341 Philips projection tv and the audio and video work fine when i unplug and plug the tv back in then video suddenly just goes out. It turns black but audio still works fine. The power button is lighted up and when the video blacks out the power button will flash twice then pause and continue to flash twice then pause. If i unplug tv and plug in again it will work but not long before video blacks out again. I was told it was the small signal board so please let me know if this is correct. Also Is this easy to replace myself or would i still need a professional todo it so they can program tv again? Please posts. thanks