Question about AOC LM729 17" LCD Monitor
You are experiencing an inverter board failure. You will need to replace or repair the inverter. The inverter drives the CCFL lamps that illuminate the screen if the lamps draw to much current or components on the board are overheating it will shut down the backlights. Some monitors have cold solder joints on the toroidal coils of the inverter that causes this problem, very typical with HP monitors, If you are handy with a solder iron you may try just re-soldering board and replacing push-pull transistors for a few more years of use. Provide make and model and I can be more specific about probable cause and solution.
Posted on Jan 18, 2008
Its looks Bad CCFL lamps or a faulty TL1451 smd IC when power shutdown in 2 to 5 5 sec.
Posted on Jan 20, 2012
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