SOURCE: sony bravia kdl40s2010u
A 4 flash indicates you have a backlight problem. Either the backlight inverter boards have failed or you have a backlight that has failed in the LCD panel. You will need a technician to check the set to determine which is the problem.
SOURCE: TV won't turn on, red flashing light
Hold The Off Button for 20 sec should make clicking noise switch off at power and on again should be working
SOURCE: my sony bravia tv is flashing red stand by light
Try leaving the TV unpugged for 30 minutes so the TV can reset itself.
If that doesn't work, most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you flashing red light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.
I hope I shed some light on the subject for you.
SOURCE: Sony Bravia standby light flashing 6 times
there is a bad ground may on the cable check the voltage on the cable & set if on cable call the cable company. if tv call sony they may help with cost may be still under warranty
SOURCE: Sony KDL40EX500 shuts down and
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/
Power off the television. Wait a few minutes, then power it back on. If this does not correct the issue leave the power on, point your remote control towards the Sony television and hold the down arrow button. While holding the down arrow button press the "Power" button. Release the down arrow button and the Sony TV
will reset itself to factory settings. Once the television performs a scan on itself your problem should be gone.
Good Luck Ed Pinero
Read more: How to Troubleshoot the Standby Indicator Flashing on a Sony TV ' eHow.com http://www.ehow.com/how_5925008_troubleshoot-indicator-flashing-sony-tv.html#ixzz2KBk1cWbu
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