Question about Sony KDL40EX500 40 in. HD-Ready TV

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Sony KDL40EX500 shuts down and flashes a red LED 7 times. What does this mean?

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  • 171 Answers

This is a issue with the power supply board here is a link that shows you what this blinking light codes mean
Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

http://www.techlore.com/article/15444/Understanding-Sony-Television-Blinking-Codes/

Posted on Sep 03, 2010

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Posted on Jan 02, 2017

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Blinks red 7 times


Your TV is experiencing high voltage and shutting down immediately. It could be the power supply or circuits.

Please see the following link for Sony Bravia Diagnostic Codes.
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TV turns itself off, then on automaticlly


The fan should run for a few minutes after shut off to cool the lamp down.

If I read and understand correctly somewhere in the cycle you are getting 5 red blinks? that is an error code........

Either you or I can Google the model number of the set with 5 blinks.....or visit the Sony site to see what it means.....

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My Sony TV shuts down after you get a bright flash of light from the screen. After it shuts down, the red LED light on the front flashes 8 times. What's the problem?


On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

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Problem for Sony Grand WEGA KDF-55WF655. Hello,


5 times Red LED blinks means Lamp Driver Error. (KDF-55WF655)
2 possible reasons, either Lamp is gone or Ballast Supply got bad.
Replace lamp first, in most cases it solved the problem.
How old is this TV and did you replaced lamp recently?
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Standby LED flashes red 4 times with pause then 4 times


You either have a bad fan or one of the rotation sensors mounted on one of the fans has failed. Take the back off the set and see it the main fan slightly right of center is rotating. If it is, there are two more fans, one mounted right above the lamp and another on the optical block itself. You will have to pull the optical block to check those.

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Green flashes then tv turns off


or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

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does the led flash when you try to power it up? If so let me know the number of flashes. From your description I would suggest 1 of 2 things happened. (1) The Convergence amp ICs have shorted and blown the 5 amp fuse on the G board, or (2) the red CRT has shorted shutting the set down. Check the fuse and if blown replace the fuse and disconnect the Red CRT PC board from the RED CRT and try powering up the set. If it powers up without shutting down then unplug the set and rehook the RED crt pc board and try again if it shuts down the reds shorted. But if it still wont start with the CRT unhooked or blows the fuse Change the Convergence ICs

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