Regarding Sharp lc-50lb481u 50" smart roku TV... 18 months ago I purchased this unit mainly on impulse. As when I spend that type of money I usually spend time on researching the item... price seemed too good and as it turned out it was... looking at reviews now I see this is a know problem. Where just over a year the units go black screen. But maintain sound. The CS guy it was a major failure. When I said it appeared to be a known issue at the time they were selling them. Why did they do so. I was civil... but just posting this as a heads up... any store that sells a know defective item will at some point get a class action suit on them. These sets may be headed that way. Also said it was the most expensive part and not worth fixing. But would pass my info onto the engineering dept... in hopes they can better the product so others can avoid this issue... so now 18 months latter I have to pay to take it to recycle... considering passing this onto our AG here in this state as he has done an excellent job of getting justice for the consumer. And this one is a no brainer... just a heads up... no more Sharp branded products in this family. But Best Buy is just about the only game in town unless I want to do Internet...