I purchased a used monitor which when turned on is perfect and within a few seconds the screen switches into horizontal interference. when turned off and back on the same happens, any suggestions what might be wrong and how to repair-Thank you
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Re: Acer AL2416 LCD
About a year ago I encountered the same problem with an LCD flat screen. It turned out to be a bad driver board but the customer did not want to spend the money to repair it. A good computer repair shop should be able to fix it for you. www.fixmymonitor.com would be a good place to start.
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lacouche, You didn't let us know any history of this monitor!!! Was it working perfectly fine on Sep 19th 2009? How old is the lcd monitor? How many "on" hours of use can you estimate that is has seen? If you lived next-door to my house I could help you trouble shoot it and find out if the "switch-mode-power-supply' has a problem with swollen CAPACITORS--which may/may not cause a problem with the cold-cathode-fluorescent-tube's" electronic ballast circuit which is called ( in lcd monitors ) a INVERTER CIRCUIT. The new style CURLIE-Q screw-in-energy efficient CFL light bulbs use a cheaper electronic ballast called CONVERTER circuit. I suspect that either one or both circuits are at fault and causing the unit to go into SHUTDOWN mode. Well, I guess that the only one to help you will be someone at ACER, or maybe a local TECH can repair it for $40-$90US. Or if you investigate your problem you might(with a lot of luck) repair it for 15-20dollars. Anyway, Good luck. I'm louie12fix on fixya or lmistyrel @aol.com
Unfortunatley your monitor is going out. I just had that problem. My sceen would come on, but after about 10min. it would blink off and turn black. I would have to hit the off button on the monitor, then turn it back on. It would work fine for a few minutes then black out again. I got a new/used monitor where I no longer have that problem.
I did check to make sure my hybernate was not activated, it wasn't, I had it set to never turn off.
this sounds like an electrical fault or failing component, within the Monitor.
Check the cabling, to ensure it,s not damaged-broken-kinked et,c. by carefully moving the cable gently side to side and up and down.
If it puts itself right for a second or two. you can assume its a broken internal wire, within the lead.
Or a dry soldered joint-Connection.
Lines caused by a bad LCD screen and lines caused by poor sync.
A bad LCD will cause perfectly straight vertical and horizontal lines that don't move at all. This is because the row and column addressing ICs have gone bad, so you will end up with rows or columns of bad pixels.
Poor sync looks more like what you are describing. The picture will flip vertically and horizontally.
Poor or missing sync can be caused by a bad video cable, or a bad IC on the main board.
If the monitor has a removable video cable, borrow another one from a friend to test if the monitor is working. If it works, head to your local computer store and buy a new cable. If the monitor still doesn't work with a different cable, you may have a bad main board. The only way to repair the monitor will be to replace the board.
If you open the monitor, be sure to check for bad capacitors. They can cause all sorts of strange faults. Look elsewhere on this site for how-tos on inspecting capacitors.
If your video cable is not removable, there's not much you can do. You will need a way to test that each pin on the cable connector on the main board conducts to a corresponding pin on the other end of the cable. You can do this if you have a multimeter, or a continuity tester.