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LM3S9B96 LCD display problem

Dear sir,

                  I am using LM3S9B96 Development kit, LCD display ribbon has been cut so replaced it with the other one, with the same LCD which come with the development kit. When i tried with simple hello.c and others but nothing is displayed on the LCD.

Note:

I have checked the Controller GPIO pins and the coil but no use.

I found the votalge levels across D4 as 5v

Please suggest any other debugging steps ,i am sure no H/W changes happened

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