Take apart monitor

Take it in and have it bench tested.
Terry

First you take the little rubber covers off of the front of the monitor--I use a dentist's pick. Under the covers there are screws. Unscrew them.
Now VERY CAREFULLY pry the two halves of the bezel apart. They snap together and I find most times the top of the bezel must be pushed inward as you pry the halves apart.

You do have to remove stand (the stand hinges are covered by the plastic pieces that you just pop them out) and all the screws. Start at the bottom to crack open the case. See AL1716 (almost the same as 1715):
http://s807.photobucket.com/albums/yy352/budm/ACER%20AL1716/

http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

The capacitors are good, no bulging top/seal? Pictures? see example of failed monitors: http://s807.photobucket.com/home/budm/allalbums
Pictures will help a lot.

"I got somebody to replace the screen for me and it was working until now" this more likely affects your warranty as the warranty seal is tampered..
What did the guy do to get it right did you replace something or just got it serviced..??
I don't user acer but my friend had problems with his lap DVD drive n got replacement. It took 2 weeks though

the pedestal has a screw behind it most likely you can remove the cover and find the pedestal screws once that is removed then the last 5th screw. open the screen half's by using a knife or similar thin strong object, and then the rear power board cover will be viewed, their are 4 screws on this and the vga and power connector has screws as well
after this it should be obvious but you can post after you get this far . good hunting

I commend your courage in taking your monitor apart. I hope it was out of warranty when you did it; because it is out of warranty now.

I have no idea where to find the info you are looking for. Monitors are cheap now, though.

acer monitors are usually put together with 5 screws on the back of the monitor, 4 where you can see them and 1 under the pivot mount, this can be accessed by removing the pivot cover and then unscrewing the pedestal then you can get the last screw, after that you need to pry the half shells apart and then you can get at the cover for the power board the VGA screws and the power socket screws must also be removed.

I just repaired one.... will likely require that you replace 3 X 220 uf 25 volt capactiros and 2 X 1000 uf 25 volt capacitors. can't miss them the tops are swelled up. but the monitor appears to work now... not bad for 5 bucks worth of parts.

Okay for anyone who still needs info on this, I just got off the phone with ACER. It's VERY easy as it turns out. The "cowling" or plastic cover over the hinge where the stand enters the back of the monitor just LOOKS like it's part of the back of the monitor. It actually pops right off if you just squeeze the sides of it, fit your fingernail under the edge and POP it right off. I really thought it was part of the back of the monitor, but it's not. Once it pops off you'll see 4 screws. The rest is self explanatory. You don't even need to take the based of the stand off, it has nothing to do with the 2 screws inside there.

Hope this helps if anyone's stuck with the same issue.