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; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. ..
SOURCE: STANDBY LIGHT TURN ON
when turning on the set will go three startup cycles about 2-3 min. then all three leds will blink/ possible causes /lamp/ballast/dmd board check or purchase the dmd board last (costs) also listen for arcing from the ballest at startup and fan noise if you can and color wheel noise also.if you hear the ballast arcing and trying to fire the lamp look at the lamp.
SOURCE: sony tv go
hello 5 blinks mean akb circuit automatic kine bias the timer indicator blinks for 30 seconds then goes in to self -diagnosis function something is wrong with the video check out Q705/732/761 and other components on the c board also check Q218/219/220 on the a board
in addition,unit could be in ik blanking try turning up the screen slighty good luck
shaun
SOURCE: i have a wega 29 inch tv. it does not turn on no
Check the fuse in the plug has not blown.
Check that the power socket is working for other devices by trying them where the TV would normally plug in.
SOURCE: My LG Super Slim 29"
You don't have a deflection yoke problem, you have a pin cushion problem. Check the pin cushion transistor.
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