Check its main power regulator board. Replace it. Visit the site named 'Electro-help' for
more details. Click this link. View it in
"Timeslide" or "Flipcard" option, which can be selected
from the drop down box menu by the [Sidebar] tag, at the top left corner
of the display window. You can also
click the [Home] tab to the latest updates. It will make search easy.
There are more than 1300 posts to different brand TVs now. Pull up older posts
there.
SOURCE: Samsung LCD 40" While LInes, Clicking Noise, Red light blinks
Your LCD has gone bad or their is a high voltage problem that powers the LCD. Usually a inverter board.
SOURCE: LCD not powering on, red light flashing
its due to weak picture problem prviously iot will happen for portable tv i won't happen for lcd.we have to check it
SOURCE: Samsung 32" can not turn on
It could be a faulty power supply (capacitors). To all who are having power supply issues: Samsung is now acknowledging a problem with faulty capacitors. I called 1 800 726-7864 and they said they would repair certain out-of-warranty TVs if the problem is related to the capacitors. I just called and they are sending a service rep out to diagnose the problem
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