I'm not sure you want to hear this, but that is a bad optical block (light engine) and is quite expensive to repair. There was a class action lawsuit against Sony for this problem/part and Sony settled by offering customers a discount on a new lcd or led tv. You may want to try contacting Sony about it to see if this offer is still good. Otherwise, it will cost around $800 -$1,000 to get it fixed. I've seen several of these at our shop and it's always the light engine. Good luck!
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