Cinema HD Display not working - flashing lights

Hi
Ii have two 23" cinema HD displays on the mac listed below. they have worked fine for ages, but today i turned on and one of the displays did not come on, instead the power light flashed periodically with a long pause then a short flash, long flash and short flash.
i have searched for solutions and i found this article for LCD displays:
http://support.apple.com/kb/HT2811
which stated that this kind of flash means the power adapter isnt working, but i tried swapping the adapted/power cord with the other display without luck.
this other article:
http://support.apple.com/kb/TA40898?viewlocale=en_US
which states it may be the backlight, but i wanted to try here to see if there was any other potential solutions, if not whats my best bet with getting it resolved?
things ive tried:
i tryed the problem display on it's own to make sure it wasnt a problem with having dual screens, it still didnt work.
I tryed swapping the power adapter, the adapter seemed to work fine with the working monitor, and the other one didnt help with the faulty display.
I tryed both display sockets in the back of the mac to make sure the connection to the mac wasnt the problem.
i thought the cable which runs to the display to the power adapter may be worth trying to swap, but while i thought this was removable i couldnt seem to disconnect it from the back of the display and didnt want to pull too hard incase i broke it is it fixed?

I had the same issue and appreciate your links, thanks. However the indication (short-long-short) was not accurate. I switched adapter with no luck, but when I switched to another 23" Cinema Display it worked fine as in your experience.
There has to bee something else wrong with our monitors. I was lucky, we had two others standing around so I'm all set.
I have no other information that might help you, sorry.

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