Since you already replaced the main board and the cable you only have the power supply left.
Sony bravia power supply board problems.
Owners of the sony bravia tv should replace the power supply with a make and model thats specifically designed for that television.
Make offer sony power supply board gl73 aps415 198219211 for xbr75x850e 75 4k android tv sony power supply board 1 474 715 11 1 983 329 11 for xbr55x900f 55 4k tv 29 99.
Some xbr x930d series bravia televisions may experience an issue where they will not power on due to a problem with the power supply circuit board.
Called repairman who took tv away for diagnosis fix.
Thelazydj i would have measured the output from the power supply to the mainboard first.
Remember that it is your main board that turns on the power supply etc.
Tvs may experience an issue where they will not power on due to a problem with the power supply circuit board a ups has nothing to do with this dear valued bravia customer some kd 55xd9305 and kd 65xd9305 tvs may experience an issue where they will not power on due to a problem with the power supply circuit board.
Called repairman who took tv away for diagnosis fix.
Sony bravia 40 lcd tv.
Sony bravia 40 lcd tv had a power supply problem.
Here is the sony triage sheet for your tv.
He fixed the problem dc dc converter but returned tv with physical damage to lcd screen lines radiating across the screen from a point on right hand side and unserviceable.