These may help - the first just tell what it is and which ICs maybe the problem (quite technical)
Solved Sony Bravia Blinking Code
Bravia KDL46EX720 Red LED blinks 4 times and TV wont turn on What is the...
or, in the last resort you could try Sony support, either to get a service manual, or to ask a technician. Don't be fobbed with an expensive answer as in one the examples above.
Support for LCD TV BRAVIA Sony
18.November.2015
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