I'm very sorry to hear that has happened. In order for me to help you most accurately, please provide the complete model code for this device. Also, is the TV directly connected to the STB or does this run through the receiver?
I have a Verizon set top box and Onkyo receiver and the TV is connected through the set top box via HDMI cables. Here's my problem: When we turn on the TV we get the error message on the screen that it cannot find the source and signal. We hear video but see no picture. After about 5 minutes, the picture will come up so we know it is getting the signal eventually and will work fine. Sometimes we have to turn everything off and on a few times and that will also work. My question is why this is happening and if there is any fix that will make the TV picture start up along with the rest of the system. We've tried everything we can think of: rebooting everything, changing ports, removing the cables and putting them back on, and unplugging everything and nothing seems to fix it. The odd part is that eventually it finds the signal and the picture will come on, so the know it is not that--just don't understand the delay in finding the signal. Any help will be appreciated!