Question about AOC LM729 17" LCD Monitor
The monitor shows the AOC splash screen then shows windows desktop, then it fades into a black screen. What is the fix for it ?
Hi, I had the same problem with a AOC LM727 monitor, the logo showed then a second of windows then it went blank, the menu would display very faintly, solding the coils fix the problem, this site might help:
Posted on May 31, 2008
Gracias, muy efectiva su recomendacion. lleva media hora funcionado y esta todo bien.
Posted on Mar 19, 2008
Hi there just fixed mine too , by soldering the contacts of the coils. they are on the powersupply board .two round rings copper wire.
Posted on Feb 16, 2008
I had the same problem. Screen goes black after few seconds.
So I tried to resoldering the two coils as suggested.
AND IT IS WORKING!!!!!!!!
great and thnks for the tip.
Posted on Jan 30, 2008
The problem is the wire used to wind the coils. It's not insulated, but it's coated with laquer. If the factory doesn't scrape the laquer off the ends of the wires before soldering, then there will be a bad connection. The solution is to scrape the ends of the wires where they protrude thru the bottom of the circuit board, then resolder using a 15W soldering iron.
Posted on Feb 09, 2009
ROLOLLMFAO, what kind of a joke is this. You buy a new monitor and you need to repair it because of the coils.
This can void any warranty, who in their right mind would do this.
Normal people would send it back to the company and tell them to fix it.
Start buying a real monitor, Acer, Asus, Samsung, LG, View Sonic, HP.
These AOC must be garbage.
Posted on Oct 29, 2012
Not work in 15min the display not will be on
Posted on Dec 27, 2009
Well I just resoldered both coils, and it Worked!!! I was about to throw away the monitor, but luckily found this page!
Posted on Jul 17, 2008
I had the same problem. First of all I tried to replace the big capacitor, but the problem remained.
Then I found and read those message considering these two coils and it WORKED for me too! Thank you so much for the shared info!
Posted on Feb 25, 2008
When the display goes to bank screen, mostly it is a dry soldering at the ring inductances/coils on the power supply board. Remove tin, clean the wire of the coil and resolder it. I have repaired many LM729's in this way.
Posted on Dec 01, 2007
Possibly a bad inverter, if that doesn't solve it probably a bad backlight. If you use the onscreen controls you should see an extremely faint image displaying the menus. That's the best way to check to verify it's not the panel itself.
Posted on Sep 05, 2007
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