I had the same problem with my E55OI-B2E. Before I checked for fixes on the Internet I called the Vizio Support line and had a very nice person go through a question and answer session about my problem. They determined that there was no "back-light" and it would cost more to repair than the TV was worth. They never mentioned the connector that could be bad. I then did checked the Internet for fixes. I decided to open up the TV and check for this problem. Sure enough, connector was lose. I soldered the connector and things are good again. Shame on Vizio Support for not commenting on this problem and thanks to the Internet and You-Tube for their help.