Own a working Mac Pro running OS 10.6.8. It's been paired, since new, with Apple 23 inch HD Cinema Display. As of today, when I started the Mac, the monitor did not respond. Nothing on the screen. Also noticed the small white light at bottom right on front of monitor was intermittently blinking on/off. I presume, that light indicates the monitor is on. In this case it's just blinking on/off. Would it be a fair assumption to say the monitor is on its way out? And, if that is the situation, what other monitors would work in place of the Cinema Display? Recommendation?