Messed up 23" Cinema HD Display

Hi all,
using two Apple Cinema HD Displays, 23" + 20" in conjunction with Mac G5.
While moving 23" to display a laptop the screen refused to function, power light gives signal dot dash dot.
Aborted attachment to Laptop and went reconfigured original set up 23 + 20 on G5. Result 23" Black with signal on power light .-.
Looking up Mac Help this .-. suggests plugged into wrong external adaptor.
Checked this out I now know I have a 65W power adaptor compatible with 20" + 90W compatible with 23"
However when correctly configured and restarted 23 " screen black and power light still giving out .-. signal.
Grateful of any help. jjb

Hi,
not as yet. think it may be a hardware prob due to me plugging into wrong external adaptor. visiting techie people will get back to you, jjb

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