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naim Posted on Mar 10, 2013

KDL-40EX720, 4 blinks on a Sony Bravia

It was turn of without showing any problem, after 2 hour when ti twas turn on we have sound but dark screen, Chanel was changeable but have no pics then turn it of then next day it try there was no sound and no pics, red light blink 4 time .

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cheryl g

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  • Posted on Mar 10, 2013
cheryl g
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Joined: Mar 10, 2013
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Try making sure that the picture plug in the back of the television is completely plugged in.

5 Related Answers

Anonymous

  • 10594 Answers
  • Posted on Mar 14, 2009

SOURCE: Sony Bravia kdl-46S3000 flashing red lights

Sounds Lamp is weak in this TV.
Please replace lamp and procedure is written in TV user manual.

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Anonymous

  • 201 Answers
  • Posted on Apr 27, 2009

SOURCE: Sony Bravia KDL-40V3000 standby light blinking

I just worked on this last week 13 blinks means there is a problem with the backlights.So it can be 1 of 2 things bad inverter board( which costs less than $200) or the panel in which case you can thow the TV away as it will probably cost as much for a new TV.Unfortunately the set I worked on ended up being panel. If you try the inverter board just take your time removing it its plugged in rather tight I gently tapped it out with a screwdriver to get it started.

Rustym62
The TV Dude

Anonymous

  • 106 Answers
  • Posted on Jun 16, 2009

SOURCE: light flashing 13 times on sony bravia KDL-46x3100

It sounds like an Intergrated Circuit (IC) has fried. Even on a good day, this is not something you can attack at home. As a tech (and as an owner of that model samsung), I'd need a map & tools to know what's going on. Your best bet in this situation is to contact Samsung and let them recommend an authorized service center in your area. Sorry I can't be of more help, but this is a rather serious problem.

Anonymous

  • 1284 Answers
  • Posted on Dec 02, 2009

SOURCE: sony bravia kdl 32l4000 - color bars running vertically on screen

In most cases is the screen is covered with vertical lines all the way accross the screen then the T-Con module is at fault. The t-con board is replaceable without having to replace the entire LCD panel which would usually make it cheaper than replacing the TV. The part number I come up with is 1-857-213-11. Please take a moment to rate my answer. Thanks...

Anonymous

  • 88 Answers
  • Posted on Oct 23, 2012

SOURCE: Sony KDL-46V3000 Bravia LCD Black screen

It's not to complicated, in the newer TVs as well as other things, when you first turn them on the diagnostic circuits kick in [that the first relay you hear click] it sends a signal (low voltage) to all the circuits to check them and make sure there are no problems. If it gets the proper returns from each circuit it kicks out and the full power relay kicks in and powers your set up. This is done to protect others circuits that might be effected by a flaw in a different circuit. What started as a small flaw in a component has gotten worse with use which is normal. Your set is kicking the diagnostic circuits and they are detecting the problem and shutting it down. You have problems with your power board, if the diagnostics circuits were not in place and full power hit the set the power board could possibly put triple or more voltage to some section of another board, thus burning it out also. That's why they started using the diagnostic circuits on TVs, Computers have had them for years. Late model car - etc. I would take the power board out of it and go to shop Jimmy's and enter the part # which will be on the board and order me another one and pop it in and kick back and watch TV again. I don't know what a power board would cost for it but "shopjimmy's" carries high quality boards at a reasonable price. I do caution you on buying a refurbished board, they are tempting but I have never and I mean never seen one hold up very long. As a matter of fact I will not put one into a TV or anything else for that matter. So there is light at the end of the tunnel and it's not the train this time! I only work on the kind of TV that plug into the wall or run on batteries, therefore, I've seen a bunch of them in14 years. Don't worry about getting the wires mixed up because one thing about TVs is a harness or plug will only fit one place and that is where it belogs you can't cross them up.
Gillight

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