Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Sounds like the tv is defective id suggest trying to replace to the if you have warranty
SOURCE: picture flickers
Check your power supply. Is it plugged in to the wall or a powerstrip? You might be overloading the powerstrip. Could be a source signal problem. Does this just happen when watching cable TV or does it do it on dvd's as well? Through the PC it is probably the viseo card,try reducing the resolution output from the computer.
SOURCE: I have a Sony Bravia XBR 46
Please make sure that the connections are secure.
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.
Please try connecting the TV to a different wall outlet and check if that helps.
SOURCE: FLICKERING PICTURE
Check power supply for the 24Volts connected to the backlight inverter ,bad caps could be the fault
SOURCE: i recently purchased a sony bravia 46" led hdtv
Adjust the powersave so the screen does not time out. The option is in your menu.
SOURCE: Sony Bravia 3D Smart Tv
If your TV is a month old call sony and get the TV serviced or exchanged. You are covered under warranty.
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