Acer aspire 3050 screen flashing.

hi guys my laptop is working fine just the screen keeps flashing like a cable inside is not fitted properly. anyone have any suggestions?? I have a 3000 and mine does the same thing, flickering between power and battery when it's plugged in. I've found that it stays fairly steady when it's charging, but when the battery is full the screen will flicker. So I unplug my laptop ever fifteen minutes or so when the battery's charged and then just run it down again. This is after I replaced the AC adaptor, which did little to nothing. Also, the box on the ACA gets much hotter than it used to, even the new one, so I'm considering finding a way to keep it cool to see if that helps. Or, of course, you could just buy an MSI Wind 123. I did that too, and I'm mucho happy.