Having problems with your AOC LM729 17" LCD Monitor ?

Aoc monitor looks like 15 inch, power light kept flashing, but now is on constantly used to work fine quit, sat for a year, plugged back in worked for a few days and then had same problem

Answers :


On these Models, this is a common problem. On most cases ( Note - Not All ), i have seen Capacitors as the main issue. You need to check the power supply section. You need to check all resistors and diodes.

Note - You need to check the continuity across all the connection, if you are unable to locate any Diode or capacitor which is either leaked or bulged. There are certain cases, where you find that IC is actually looking OK, but once you check with Voltmeter/Multimeter, you could find that it is not good at all.

On one of the Models, i worked there was no voltage at pin 7 of IC901, traced back to R906 ( 1M ohm\015\0121/2W ) which was open circuit, replaced R906 and unit back to normal.

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Note - Do Accept the Solution, if 100% satisfied from my service!!
Hi Marine, good day, the flashing power light means that the monitor is on standby, if pressing power on will not start the monitor, there are porblems with the power supply board.
\015\012Here are my diagnosis;
\015\012The power board accepts ac mains voltage from 90v to 240v AC and converts them to several levels of DC, if this board goes bad, it will not start your monitor. We swap the power supply board with a new one, then test.
\015\012If replacing the power board, the next thing is to swap in the main board with a good one, the power board may be good but it detects an overload on the mainboard, this main board controls the LCD, adjustments, resolutions controls and sound, when this happens, the power supply board goes standby.
\015\012Servicing the monitor may or may not get expensive if you will do it yourself, check out first your dealer if the monitor is on warranty.
\015\012Else check out the service offered by your dealer, they will replace only the bad part. = )
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