I posted this at /r/Bravia already. Maybe some ppl here have useful input as well. (link at end)
Hi, so I have a KDL-55W809c and there were some problems like breaking graphics etc. It was under warranty so I contacted the Sony service. The technician replaced the mainboard but now when I turn it on and go to information it shows an older model and less inches! KDL-43W805c. Have I been screwd over? I called the technician and he claims there is one mainboard for many different models and that it automatically tunes itself depending on the TV it is attached to, and that he had to come and manually change the model name in the service menu. Is this true or are they giving me an older model mainboard? Is there a way for me to find out? Thx guys!
https://www.reddit.com/r/bravia/comments/6p6w5s/wrong_model_after_technician_replaced_mainboard/