Cinema Display Mini DisplayPort not working with Thunderbolt


i can't seem figure out: have cinema display, 1 mini displayport. haven't used in few months , went use week ago. plugged mini displayport 2013 mbp thunderbolt port , nothing happened. won't turn on.

i've checked power cable plugged in properly; monitor , wall. borrowed power cable monitor works , still no sign of life.

have clue happened? maybe i'm missing something...

thanks!
 



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