Per Sony site, unplug for 3 minutes if your T.V. picture goes out and you have blinking red lights. If still have a problem and T.V. is plugged into a power strip, then unplug for 3 minutes, then plug directly into wall. The power strip could be bad. (https://us.en.kb.sony.com/app/answers/de...)
It could also be a backlight problem of some sort.
If you can view T.V. again, and want to see error codes, do the following: Turn T.V. off. Quickly press "Display", "Channel 5", "Down Volume", then "Power". Press "Power" again if nothing came up on T.V. See error codes. Press "Power" again, then again, to return to normal T.V. (https://electro-medical.blogspot.in/2016...) and (http://tampatec.blogspot.de/2015/03/sony...)
I have same problem with my T.V., Sony kdl32xbr4. I already know I have a backlight error of some sort, since part of the screen is slightly darker. The codes verified that. I also had the 6 blinking red lights with no picture at all. Unplugging for 3 minutes did reset the picture. Error 6 was listed on my T.V. as a backlight problem. Though I do not know for sure if Error 6 is the same as the 6 blinking lights, since the blinking light happened when the picture went totally out. The backlight partially went out a few month ago with no blinking lights.
I will eventually need to take my T.V. in for repair but do not currently know what the cost will be. I am hoping it is worth repairing. It has been a great T.V.