KDL-55EX720 blink for times

Hi @mab6680 ,

Which two boards did you change?

According to the troubleshooting triage chart (see image below) from the service manual for the TV, it could either be the LD board or a faulty LCD panel as the most likely causes.

(Be patient, as it takes a little while to go from “processing” to Download” when you go to download the file after passing the reCAPTCHA test and clicking on Go to Download)

(click on image to enlarge for better viewing)

Hi @mab6680 ,

Your 1st picture shows the G8A power board.

I cannot see the board number in the 2nd picture. Is the board shown in your 2nd picture the G6A board (look for its’ location in the image below)?

The fault symptom triage chart shows that the first board to try replacing is the LD board as I said in my answer.

Here’s a composite image, showing the location of the LD board in your TV and also what the board looks like close up.

(click on image to enlarge for better viewing).

Since you have replaced both the G8A and G6A boards then if replacing the LD board doesn’t fix the problem (or maybe try the LVDS cable) then you have a faulty panel, which cannot be repaired. It has to be replaced.