no picture no sound
32 days after I bought this tv it went out. no picture or sound. I had it repaired under factory warranty. 2 years later, it happened again. the same exact thing. I put it in the closet and went and bought a new t.v. The other day, I pull it out of the closet to see if I could repair it. After exploring the web, I ordered a new "A" board. I changed it out and now my back lights come on but nothing else. What else could be causing my problem?