I have a Sony Bravia XR55X90J that just did the same thing right after the last update. My larger Sony Bravia updated fine but this one is totally dark. I can tell it is drawing some power as I get a slight light flicker in my apartment when I plug it in. Noe of the factory reset procedures work.[br]
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My set is about 17 months old and the same, I thought I was buying better quality so never got and extended warranties. After talking to Sony support they basically told me I was out of luck and gave me a list of service depots. I live in a small metropolis area with only about 500K population but would have to drive in about 100km either way to get near a service depot. It seems Sony is almost non-existent here despite charging such outrages prices compared to so many other brands. Next time it will be LG or RCA or brand X for less than 25% of the price.