The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main 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. 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.
Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
SOURCE: Flickering dots
The symptom you described is called diffusion. A simple alignment, normally in the power supply takes care of this problem. For the nearest Authorized Service Center near you contact Toshiba online at: http://webmail.tacp.com/service/servcntr.nsf/$$Search?OpenForm Hope this helps
SOURCE: Flickering/pixelating screen on LTV-27w6 HD after 30 minutes.
Sound like dry goint on Power Supply bord. I had the same problem and resolder most of the parts of the power supply and TV was ok.
SOURCE: Flickering red spots
its due to overheating of any component on the main board and needs to checked with a meter to locate the faulty and replace.
SOURCE: My Sony KDL-46 Xbr4 picture flickers and there's
The blinking light is a problem code.
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.
But, 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, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you blinking light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20. And most cases the new part cost less than $15.
I hope I shed some light on the subject for you.
SOURCE: Sony kdl-46w4150 standby blinks 8 times
Click the link below :----http://wikisolutions.blogspot.in/2012/02/get-free-answers.html
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