Sony Bravia LCD KDL-55EX720 with 4 Blinks Red Lights Code

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john.mdp
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Sony Bravia LCD KDL-55EX720 with 4 Blinks Red Lights Code

We have a Sony KDL-55EX720. When the TV is turned on, it display the screen for few seconds and them it automatically Turn Off and give a signal of 4 red light blinks.  This is suppose to be a backlight inverter failure, as we found on internet. We requested Sony Part 147430211 (DPS-78 CH 1-883-933-11) G8 Converter/inverter and replaced. But the TV Still give the same message. What can you recommend us to do?

Steven Jones (not verified)
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I have the exact same problem

I have the exact same problem. Did you find a solution for it? I took it to Sony service center and they said it would need to replace the entire screen, but I don't believe it would be like this since the image shows up briefly. Thanks

john.mdp
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We Tried Replacing the G8

We Tried Replacing the G8 Board and BATV Board. No Luck. We are going to try with the G6 Board and the Led Control card. If this doesn't work either, them we are pretty screwed with this TV.

Steven Jones (not verified)
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Thanks John. Let me know if

Thanks John. Let me know if it works for you. I'll start with the troubleshooting using the TV service manual (I believe you provided the link for that in another forum).

If I have any luck with mine I'll post here.

dhod84
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so you guys have any luck?

so you guys have any luck?

ginjiguy89
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I have an 46ex720 with the
I have an 46ex720 with the four blinking red light also. any solution so far?  
Msmelaniec
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I have a Sony Bravia KDL
I have a Sony Bravia KDL series with a 6 blinking lights problem. HELP!!!
 

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