Another surprise. The image on my Acer flatscreen monitor suddenly became yellow, but the corresponding image on the monitor of my laptop, to which the Acer monitor is connected, remained normal. And of course everything I have read about this problem so far is geek talk -- gibberish, terms that mean nothing to me -- and the first instruction -- to move the "calibration" menu to the display I want to correct -- doesn't seem to apply.
What other industry gets away with this?? They sell you something; it doesn't work; and they disavow any responsibility. Guess somebody ought to sue.