20 Most Recent AOC LM729 17" LCD Monitor - Page 3 Questions & Answers

Look for bad caps as shown here: http://s807.photobucket.com/albums/yy352/budm/AOC/AOC%20LM729/

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Good day, Sir/ Mam kindly install your audio driver.
Thank you for posting.

You can change the language

1. Press the MENU-button to activate the OSD window (Figure 4).
   

2. Press or > to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate it. If the function selected has a sub-menu, press or > again to navigate through the sub-menu functions. Once the desired function is highlighted, press MENU-button to activate it.
   

3. Press or > to change the settings of the selected function.
   

4. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-3
   

move over to the icon press the menu button press to select English Press Menu button
select the exit icon which is the right bottom icon press menu to save

See my tip here: http://www.fixya.com/support/r6820093-hard_drive_or_monitor_randomly_switching

Just in case the monitor is not te problem, why don't you try this.

For (xp)
-Go to desktop
-right click and click properties.
-screen saver
-power
-then set all the drop down list box to never
-click apply.
You can try it on other operating system.
-go to controls
-look for display and follow 2nd step on xp.

Hope this help. Thank you for using Fixya!

Could be the resolution too high for the monitor.
Try to press "F8" during the "Starting Windows" message, then select the safe mode or VGA mode.
After logging in check the resolution and if needed reduce it.

Could be also a video driver problem.

Use the same "F8" trick to get to the safe mode and reinstall the video driver.

I hope this will give you some ideas

There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for 5 mins, then try.

If you aren't tech savvy, this unit needs to go in for repair.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for different brand, but same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

burn your monitor. thats all......

First: to lock and unlock: http://www.fixya.com/support/r4628438-aoc_monitor_lock_unlock_instructions

Second: This model is known for having bad caps: http://s807.photobucket.com/albums/yy352/budm/AOC%20LM729/

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps. Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series. Please post back what you find. Please leave rating if it helps.

Your PC video resolution is too high for the monitor to display.
Max resolution for this monitor is 1280 x 1024 @60Hz.
http://www.fixya.com/support/r4873371-fixing_out_range_format_not_supported

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

This means that there is no connection. Check your cables, and reseat them. Turn on your computer and then turn on the monitor. If it still says no service, the input control board may be failing. This could also mean that your Video Card in your computer is not sending out a signal. Test the monitor with another computer that is known to be working, or test your computer with another monitor that is known to be working. I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

The monitor has a screen issue, the problem is the master board which combines the video, repairs are not practical because of the cost involved, It is cheaper to replace than repair.

Look for bad caps and replace them in a set, bad cap can look normal.
See my pictures here: http://s807.photobucket.com/albums/yy352/budm/AOC%20LM729/

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you. Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

http://www.lcdparts.net

Basic LCD monitor troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

No It does not have built-in microphone.
It has buit-in speakers.
Watch out for the caps to go bad soon: http://s807.photobucket.com/albums/yy352/budm/AOC%20LM729/

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV, Monitors, capacitors, and lamps pictures: http://s807.photobucket.com/home/budm/allalbums http://en.wikipedia.org/wiki/Capacitor_plague

hawaibampras, Try thinking about the problem this way instead. "On/Off" switch works!! The electronic circuit that the switch is connected to is not "listening" to it any more. You will need to investigate units internal switch mode power supply board. Switch should be good for minimum 10k to 50k actuations!!! That would be approximately 2000 to 3500 days useage or more. 12fixlouie

It can be that it is not getting the video signal from the PC, try it with another PC first. If it still does not work, then you will have to do in-depth troubleshooting.
http://s807.photobucket.com/albums/yy352/budm/AOC%20LM729/
If you are going to DIY and have proper tools and know safety precaution then please read on: Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.