Question about AOC LM720 17" Flat Panel LCD Monitor
WHEN I START MY MONITOR IT HAS A VIDEO FOR A FEW SECOND AND IT TURN INTO BLACK..WHAT SHOULD I DO?
YOU HAVE A DRY SOLDER PROBLEM, You have to open the monitor and check the solders in the PC BOARD , mainly where theres A SMALL transformer resolder it , and try again ,that should fix it . hope it helps
Posted on Apr 20, 2008
I've had a very similar issue on many Dell Monitors. Mine have been under warranty and they usually send me a new monitor, but I believe the issue lies with the power supply within the monitor.
Posted on Jul 10, 2008
SOURCE: AOC LM725 LCD Monitor
try looking for bloated caps, check all diodes... see if its not shorted/leaking and finally check the power regulator ic if its not shorted! note: some capacitors and diodes are very tiny, you should use a lens with good amount of light...
if it does not help..... well, what the hell? try pouring some gas, then light it up! that should solve the problem, at least it turned on right? hehehehe!
Posted on Nov 12, 2009
Here is the service manual: http://elektrotanya.com/?q=showresult&megnev=AOC%20&megnev2=LM729%20&kategoria=&kat2=all
You will need test lamp to verify if it is the inverter or the lamp assemblies.
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.
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Posted on Sep 09, 2010
Tips for a great answer:
Apr 05, 2011 | AOC LM729 17" LCD Monitor
Dec 15, 2010 | AOC LM729 17" LCD Monitor
Jul 26, 2010 | AOC LM729 17" LCD Monitor
Jan 22, 2010 | AOC LM729 17" LCD Monitor
Mar 21, 2009 | AOC LM729 17" LCD Monitor
Mar 14, 2008 | AOC LM729 17" LCD Monitor
Mar 18, 2007 | AOC LM729 17" LCD Monitor
Jan 18, 2009 | AOC LM720 17" Flat Panel LCD Monitor
41 people viewed this question
Usually answered in minutes!