@ben73355 for a Sony KD-65X9500G the 4 blink code is an LED driver failure/LED voltage protection. This happens if your backlight strips have failed. It also happens when there is a panel error and it does not communicate with the rest of the TV, which is possibly a bad main board. Since your TV is a Sony and they have had issues with the backlights, that would be my first step.
There is a way of bypassing the 4 blink error but it is a bit different from main board to main board. We need to see your boards to possibly help you with a temporary bypass so you could at least check your back lights etc.
Adding images to an existing question
@ben73355 picture #1 is your LED driver board. Check fuses F1000 and F1001 for continuity and voltage. Careful! F1001 is high voltage at 125V. Let us know if you do not know how to check for continuity and for power. Don't want you to get zapped or shorten out your board :-)
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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