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Television - Picture & Sound

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Groovin'
kleinscott2
Posts: 3
Registered: ‎12-04-2012
Accepted Solution

Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

I tried unplugging the power. Afterwards the TV would turn on for a few seconds but then turn back off, and then the red blinking light would resume blinking 4 times and then pausing and then blinking 4 times again repeatedly. I tried googling what that error code means. I could not find anything about that exact model number but on an older sony tv it meant there was a fan issue. Can anyone tell me what that error code signifies and how I may be able to fix it.

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Top 40 Artist
KimberlyS
Posts: 3,847
Registered: ‎11-12-2012

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

[ Edited ]

Hello Scott,

Welcome to the Sony Community Forums.

4X Blink – Balancer Error
The 4X error code is only used on models incorporating local dimming LED backlighting. If a failure occurs on the LD board the TV will shut down and display this diagnostic code.

Please contact Consumer Electronics support for repair options.

http://esupport.sony.com/US/p/support-info.pl?info_id=932

 

 

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Tuning Up
jpernia
Posts: 1
Registered: ‎11-27-2013

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

and 6 times in model KDL-37L4000??

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Moderator
AngelaP
Posts: 2,003
Registered: ‎05-23-2013

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

Hi jpernia!

 
Thanks for the message. Follow the steps below to troubleshoot the TV. 
 
Do a Power Reset.
 
1. Turn off the TV.
2. Unplug the power cord of the TV from the electrical outlet.
3. Let the TV remain without power for 60 seconds.
4. Plug the power cord back into the electrical outlet. (If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.)
5. Turn on the TV.
 
If the issue still persists after performing power reset, that may be an indication that the TV needs service. You may refer to this link to locate the nearest Sony authorized service center in your area. 
 
If my post answers your question, please mark it as "Accept as Solution."​
 
 
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Groovin'
kleinscott2
Posts: 3
Registered: ‎12-04-2012

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

@KimberlyS, Thank you so much you helped me fix my tv back in 2012. The repair shop said the whole panel was broken but thanks to your tip it just needed a simple replacement of the $30 LD board. Unfortunately my KDL46EX720 is once again experiencing problems.  It has recently developed black horizontal lines on the top right quadrant of the screen.  It started as a single line right around the middle on the right edge and progressively spread to the top edge. The lines get fainter more towards the middle of the screen.  I turned off all the image processing features (motionflow, cinemotion, etc) and that seems to have stopped the lines from spreading.  I am wondering if this is an issue with the panel (deal pixels maybe?) or if once again there is an issue with one of the internal component boards.  If this is a board issue, if anyone could tell me which board that needs to be replaced I would greatly appreciate it.

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Moderator
AngelaP
Posts: 2,003
Registered: ‎05-23-2013

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

 

Hi kleinscott2! 
 
We're very sorry to hear about what is happening to your TV. Does the issue happen on every channel and input? If yes, that may be an indication that the TV needs service. You may refer to this link to locate the nearest Sony authorized service center in your area. 

 

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Groovin'
kleinscott2
Posts: 3
Registered: ‎12-04-2012

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

Yes the black horizontal lines appear on every input.  Ive already brought the tv to an authorized sony repair shop and they told me the panel was bad. However the last time my TV was experiencing problems (see the original post that started this thread in 2012) an authorized sony shop again told me the panel was bad. However thanks to KimberlyS, who adviced that it was the local dimming board, I was able to save a significant amount of money and fix my tv.  I am hoping that similar to the original issue, this current issue can be resolved with a simple replacement of one of the internal component boards rather than simply stating that the panel is bad which the sony shop seems to always say rather than diagnosing component issues.

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Moderator
AngelaP
Posts: 2,003
Registered: ‎05-23-2013

Re: Bravia KDL46EX720. Red LED blinks 4 times and TV wont turn on. What is the problem?

If one of the internal parts need to be changed, it will be better to have a technician personally look at the TV and confirm this.

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