Mine never turned on but the blue power light would blink.I disconnected the upper y buffer and got light on the bottom half of screen and the blinking stopped.I have the upper board on order and I think this will fix my problem.There is a blink code somewhere,just count how many blinks.Start pulling connectors from power supply and when it quits blinking you've found the one,could also be the power supply with bad cap.
SOURCE: Tv cuts off and green light flashes
If your set was manufactured around July 2005, you may need a firmware upgrade to solve this issue. On the Sony website you can enter your model # and serial # to see if you TV is affected. If so, it is easy to have done and may be free from Sony. It sounds like the issue they described in the writeup on the required formware update. I had mine done within few months of when i bought it (purchased in Dec 2005) and it has been working flawlessly since.
Good luck!
Donnieboy999
SOURCE: TV powers up initially, but shuts down within seconds.
These TV's are somewhat sensitive to internal heat. It appears your sensor has triggered an overheat. This doesnt mean you still have the heat issue, it just saying it needs to be replaced or reset, either way it is not something you can do in your home. Taking it to your local authorized shop will ensure proper repairs, about $90 worth.
SOURCE: kdl-40w3000, when power button pushed,
Hello,
You need to check the output voltages of the power supply to see which one goes off. It may be due to short circuits some where, if otherwise,
Power supply board have problems,just not dead yet.Replaced the power supply board,will solved this problems.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Hope this will to fix the fault......
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