Samsung 931 B - Dual monitor setup (worked 2 years). one monitor no longer shows anything - LED is blinking about once every 0.75 seconds. either power cord or either source cable works with other 931B, but broken one shows nothing on screen, ever. screen actually blinks SLIGHTLY at same interval as LED. not using DVI cable- using old school rgb on each. i need two identical monitors. fix this one (myself or professionally) or get new one?