Question about AOC 203P (Black) 20.1" LCD Monitor
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Posted on Jan 02, 2017
It seams like connection is bad. If it is black but light show that is on or in stand by than it is the cable from monitor to computer if monitor is totally off when it is black either the electrical connection is bad or the power plug is broken.
Posted on Jan 31, 2008
This is an old post but maybe this will help someone else......
I have sold a lot of these LM729's a few years back and now, out of warranty, they are starting to show these same symptoms. I was stumped at first but finally did some real testing on them and found that in every case it it the 1000uF capacitors that are faulty. Look at the board and you will see 2 capicitors, the barrel shaped components, that have 1000uF printed down the sides of them. Both of these should be replaced even if only one is bad because chances are the other will go soon as well. You can usually pick these up for under 2 bucks each at your local Radio Shack. Get ones rated for 35 volts (35V), the ones on the board are 16vols but I usually try to go a bit more robust when I replace capacitors. The rating is just how high the voltage can go so it's okay. They are usually more durable since they are to handle higher voltages. Just take the LM729 apart, remove the power board, desolder the capacitors, clean up the holes, (Be gentle in desoldering them, you don''t want to pull the things, you will pull off and possibly tear the copper foil pad that you need to solder the new cap to) Install the new capicitors minding the polarity, as in there is a MINUS sign on the capicitor and this must go in the hold with the matching MINUS sign. Solder the leads, clip the excess off. Reassemble and you'll probably find that LM729 working just fine! These are very good monitors and very rugged. AOC isn;t at fault for this failure. The Chinese have been making scads of bad capicitors for a few years now. Anymore, if there is an electronic failure it can be traced back to bad capicitors.
Posted on May 02, 2009
Sounds like bad video card drivers..Try updating the drivers from the manufacturer's website. Give us the details of your video card/ PC.
Or it could be monitor related. Open the monitor and check the power supply. Make sure there are no bad capacitors inside. If you find any replace them with new ones with same number or bigger capacity,
Posted on Apr 02, 2010
The video resolution of your PC is too high for the monitor to display.
Capacitors kit: http://lcdalternatives.auctivacommerce.com/
Posted on Aug 01, 2010
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