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@oldturkey03 - I tried a few things.. my TV does not have any image and is having a lot of lines vertical and horizontal. It gives sound. Tried : X Replaced TCON board X Found someone selling ribbon cables on eBay and hence tried connecting new ribbon cables. I have tried to understand the voltage readings, but honestly , I dont understand what is the correct levels of V required. Trying to understand how to understand if it is the logic board or power board that is the problem. Since I get the sound, I was suspecting issue more to be with the logic board. Thanks!
@iwozsteve this “is having a lot of lines vertical and horizontal” is what always spooks me. Most commonly this is caused by a failed LCD driver board. That is the board(s) that connects with some fine ribbon cables to the LCD itself. It uses a special bonding process so that board can not be readily changed. Since you already changed the T-con board (which would be a valid suspect) the only other thing you could try is to check the Main board. The power board will really be of no consequence to a problem like the one you encounter with your Vizio. Post some pictures of what your TV shows with your QUESTION. Le’t see what we are looking at Adding images to an existing question
