My 73742 started doing that after about 3 months of owning it. Finally just shut down and wouldn't come back on. Bad main board was the issue and it has now been about 8 months since the fix. I'm not overly concerned with these issues that show up now and then, but I did buy a 5 year extended warranty when I bought the set just in case.
12/16/13 at 7:29am